Android client: Server not available

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Nextcloud version (eg, 20.0.5): Nextcloud 22.2.3
Operating system and version (eg, Ubuntu 20.04): OpenSUSE 15.3
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.43 (Linux/SUSE)
PHP version (eg, 7.4): PHP Version 7.4.6

The issue you are facing:
I can log in Nextcloud Android client but the notification appears ‘Server not available’ on top.
All filees are stored in server not available in Android client.
Screenshot_20211122_203031_com.nextcloud.client

Apple client doesn’t have such issue.

Is this the first time you’ve seen this error? (Y/N): Y

Steps to replicate it:

The output of your Nextcloud log in Admin > Logging:

{"reqId":"TG7P8iSFuU0NIrN8IKdF","level":2,"time":"2021-11-21T04:21:49+00:00","remoteAddr":"192.168.16.223","user":"--","app":"core","method":"GET","url":"/nextcloud/ocs/v2.php/cloud/user?format=json","message":"Login failed: 'Eric Luo' (Remote IP: '192.168.16.223')","userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.18.0","version":"22.2.3.0"}
{"reqId":"7ORFhtWUDQnw4ByVHxK5","level":2,"time":"2021-11-21T04:22:06+00:00","remoteAddr":"192.168.16.223","user":"--","app":"core","method":"GET","url":"/nextcloud/ocs/v2.php/cloud/user?format=json","message":"Login failed: 'Eric Luo' (Remote IP: '192.168.16.223')","userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.18.0","version":"22.2.3.0"}
{"reqId":"oUVUXI03UD0r7Mm77TnY","level":3,"time":"2021-11-21T10:28:16+00:00","remoteAddr":"192.168.16.202","user":"admin","app":"index","method":"GET","url":"/nextcloud/index.php/core/preview.png?file=%2FDocuments%2FNextcloud%20Configuration.md&x=100&y=100","message":"Call to a member function stat() on null","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0","exception":{"Exception":"Exception","Message":"Call to a member function stat() on null","Code":0,"Trace":[{"file":"/srv/www/htdocs/nextcloud/lib/private/AppFramework/App.php","line":156,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/Route/Router.php","line":302,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/srv/www/htdocs/nextcloud/lib/base.php","line":1006,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/srv/www/htdocs/nextcloud/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}],"File":"/srv/www/htdocs/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","Line":158,"Previous":{"Exception":"Error","Message":"Call to a member function stat() on null","Code":0,"Trace":[{"file":"/srv/www/htdocs/nextcloud/lib/private/Files/SimpleFS/NewSimpleFile.php","line":136,"function":"checkFile","class":"OC\\Files\\SimpleFS\\NewSimpleFile","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/Preview/Generator.php","line":262,"function":"putContent","class":"OC\\Files\\SimpleFS\\NewSimpleFile","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/Preview/Generator.php","line":140,"function":"getMaxPreview","class":"OC\\Preview\\Generator","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/Preview/Generator.php","line":109,"function":"generatePreviews","class":"OC\\Preview\\Generator","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/PreviewManager.php","line":189,"function":"getPreview","class":"OC\\Preview\\Generator","type":"->"},{"file":"/srv/www/htdocs/nextcloud/core/Controller/PreviewController.php","line":169,"function":"getPreview","class":"OC\\PreviewManager","type":"->"},{"file":"/srv/www/htdocs/nextcloud/core/Controller/PreviewController.php","line":106,"function":"fetchPreview","class":"OC\\Core\\Controller\\PreviewController","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":217,"function":"getPreview","class":"OC\\Core\\Controller\\PreviewController","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":126,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/AppFramework/App.php","line":156,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/srv/www/htdocs/nextcloud/lib/private/Route/Router.php","line":302,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/srv/www/htdocs/nextcloud/lib/base.php","line":1006,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/srv/www/htdocs/nextcloud/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}],"File":"/srv/www/htdocs/nextcloud/lib/private/Files/SimpleFS/NewSimpleFile.php","Line":153},"CustomMessage":"--"}}
{"reqId":"UWdBBz4iEogfc0EGB0sY","level":2,"time":"2021-11-21T10:36:12+00:00","remoteAddr":"192.168.16.202","user":"--","app":"core","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: 'Eric Luo' (Remote IP: '192.168.16.202')","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"UWdBBz4iEogfc0EGB0sY","level":2,"time":"2021-11-21T10:36:12+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: 24754868@qq.com (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"7S8OINX3dETgSrVnFJvN","level":2,"time":"2021-11-21T10:36:18+00:00","remoteAddr":"192.168.16.202","user":"--","app":"core","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: 'Eric Luo' (Remote IP: '192.168.16.202')","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"7S8OINX3dETgSrVnFJvN","level":2,"time":"2021-11-21T10:36:18+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: 24754868@qq.com (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"ZerkuTOIKv1r6mfSppBD","level":2,"time":"2021-11-22T08:23:51+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: eric (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"qRyoNgqgR7pT3igbqrIk","level":2,"time":"2021-11-22T08:23:56+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: eric (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"D7V6jD0J0yxQuMA4N8ZO","level":2,"time":"2021-11-22T08:24:04+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: eric luo (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"9QWAyfL4IdpBMoIro7lj","level":2,"time":"2021-11-22T09:20:18+00:00","remoteAddr":"192.168.16.223","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: Eric luo (Remote IP: 192.168.16.223)","userAgent":"Huawei EML-AL00 (Android)","version":"22.2.3.0"}
{"reqId":"PqlG3SXa9HTI5Ea33pEm","level":2,"time":"2021-11-22T09:37:58+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: admin (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}
{"reqId":"8ooqeoDbqRNU33P9N0OE","level":2,"time":"2021-11-22T09:38:08+00:00","remoteAddr":"192.168.16.202","user":"--","app":"no app in context","method":"POST","url":"/nextcloud/index.php/login","message":"Login failed: admin (Remote IP: 192.168.16.202)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36","version":"22.2.3.0"}

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'instanceid' => 'ocyyjd9m5ppq',
  'passwordsalt' => 'scP1zCpdP0WTkG2R4kOabll5SgoFB5',
  'secret' => 'fDjWHDnkkMHyyawccH7WcPVmZEM4hB9A9CxDoc95clK2DT3u',
  'trusted_domains' =>
  array (
    0 => '192.168.17.252',
  ),
  'datadirectory' => '/mnt/nextcloud_data',
  'dbtype' => 'mysql',
  'version' => '22.2.3.0',
  'overwrite.cli.url' => 'https://192.168.17.252/nextcloud',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'nextcloudadmin',
  'dbpassword' => 'Logmein@21',
  'installed' => true,
  'default_phone_region' => 'AU',
  'memcache.local' => '\OC\Memcache\APCu',

  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'overwriteprotocol' => 'https',
  'updater.release.channel' => 'stable',
  'mail_from_address' => 'ericjingluo',
  'mail_smtpmode' => 'smtp',
  'mail_sendmailmode' => 'smtp',
  'mail_domain' => 'qq.com',
  'mail_smtpauth' => 1,
  'mail_smtphost' => 'smtp.qq.com',
  'mail_smtpport' => '587',
  'mail_smtpname' => '24754868@qq.com',
  'mail_smtppassword' => 'vtnuuyhlejdsbhjg',
);

Acess _log

192.168.16.202 - - [22/Nov/2021:20:47:27 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - Eric Luo [22/Nov/2021:20:47:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:47:59 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:48:21 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 112
192.168.16.202 - Eric Luo [22/Nov/2021:20:48:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:48:24 +1100] “GET /nextcloud/index.php/settings/admin/logging HTTP/1.1” 200 8100
192.168.16.202 - - [22/Nov/2021:20:48:24 +1100] “GET /nextcloud/apps/logreader/build/main.css?v=b1d71238-0 HTTP/1.1” 200 6896
192.168.16.202 - - [22/Nov/2021:20:48:24 +1100] “GET /nextcloud/apps/logreader/css/app.css?v=b1d71238-0 HTTP/1.1” 200 540
192.168.16.202 - - [22/Nov/2021:20:48:24 +1100] “GET /nextcloud/apps/logreader/build/main.js?v=c079a431-0 HTTP/1.1” 200 241179
192.168.16.202 - - [22/Nov/2021:20:48:24 +1100] “GET /nextcloud/index.php/css/settings/1bf6-2c6f-settings.css?v=32ef7dc01a3ffbcbbaf8fb9483f9bd03-c079a431-0 HTTP/1.1” 200 6110
192.168.16.202 - - [22/Nov/2021:20:48:24 +1100] “GET /nextcloud/apps/user_status/img/app.svg?v=c079a431 HTTP/1.1” 200 416
192.168.16.202 - - [22/Nov/2021:20:48:25 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 200 81
192.168.16.202 - - [22/Nov/2021:20:48:25 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 112
192.168.16.202 - - [22/Nov/2021:20:48:25 +1100] “GET /nextcloud/ocs/v2.php/search/providers?from=%2Fnextcloud%2Fsettings%2Fadmin%2Flogging HTTP/1.1” 200 201
192.168.16.202 - - [22/Nov/2021:20:48:25 +1100] “GET /nextcloud/index.php/apps/logreader/settings HTTP/1.1” 200 107
192.168.16.202 - - [22/Nov/2021:20:48:25 +1100] “GET /nextcloud/index.php/apps/logreader/get?offset=0&count=50&levels=11111 HTTP/1.1” 200 3487
192.168.16.202 - - [22/Nov/2021:20:48:40 +1100] “GET /nextcloud/core/img/actions/checkbox-mark.svg HTTP/1.1” 200 212
192.168.16.202 - - [22/Nov/2021:20:48:25 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:48:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:48:55 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:48:45 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:49:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:49:25 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:49:06 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/index.php/settings/admin/logging HTTP/1.1” 200 8099
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/apps/logreader/build/main.css?v=b1d71238-0 HTTP/1.1” 200 6896
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/apps/logreader/css/app.css?v=b1d71238-0 HTTP/1.1” 200 540
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/apps/user_status/img/app.svg?v=c079a431 HTTP/1.1” 200 416
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/index.php/css/settings/1bf6-2c6f-settings.css?v=32ef7dc01a3ffbcbbaf8fb9483f9bd03-c079a431-0 HTTP/1.1” 200 6110
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 200 81
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 112
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/ocs/v2.php/search/providers?from=%2Fnextcloud%2Fsettings%2Fadmin%2Flogging HTTP/1.1” 200 201
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/index.php/apps/logreader/settings HTTP/1.1” 200 107
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/index.php/apps/logreader/get?offset=0&count=50&levels=11111 HTTP/1.1” 200 3487
192.168.16.202 - - [22/Nov/2021:20:49:39 +1100] “-” 408 -
192.168.16.202 - - [22/Nov/2021:20:49:39 +1100] “-” 408 -
192.168.16.202 - - [22/Nov/2021:20:49:40 +1100] “GET /nextcloud/index.php/settings/admin/log/download HTTP/1.1” 200 239795
192.168.16.202 - - [22/Nov/2021:20:49:26 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:49:29 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:49:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:49:59 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:49:50 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:50:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:50:29 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:50:10 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:50:30 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:50:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:50:59 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:50:50 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:51:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:51:29 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:51:30 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 112
192.168.16.202 - - [22/Nov/2021:20:51:10 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:51:30 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:51:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:52:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:51:50 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:52:23 +1100] “GET /nextcloud/ocs/v2.php/apps/user_status/api/v1/user_status?format=json HTTP/1.1” 200 154
192.168.16.202 - Eric Luo [22/Nov/2021:20:52:23 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications?format=json HTTP/1.1” 304 -
192.168.16.202 - Eric Luo [22/Nov/2021:20:52:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:52:10 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:52:32 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:52:32 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:52:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:53:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:52:52 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:53:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:53:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:53:13 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:53:33 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:53:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:54:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:53:53 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:54:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:54:30 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 114
192.168.16.202 - - [22/Nov/2021:20:54:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:54:14 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:54:51 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 112
192.168.16.202 - - [22/Nov/2021:20:54:34 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:54:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:55:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:54:54 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:55:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:55:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:55:14 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:55:34 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:55:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:56:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:55:54 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:56:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:56:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:56:15 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:56:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:56:35 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:57:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:56:55 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:57:23 +1100] “GET /nextcloud/ocs/v2.php/apps/user_status/api/v1/user_status?format=json HTTP/1.1” 200 154
192.168.16.202 - Eric Luo [22/Nov/2021:20:57:23 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications?format=json HTTP/1.1” 304 -
192.168.16.202 - Eric Luo [22/Nov/2021:20:57:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:57:32 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:57:15 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:57:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:57:35 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:58:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:57:55 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:58:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:58:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:58:15 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:58:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:58:35 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:20:59:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:58:55 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:59:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:59:30 +1100] “PUT /nextcloud/index.php/apps/user_status/heartbeat HTTP/1.1” 200 112
192.168.16.202 - - [22/Nov/2021:20:59:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:59:16 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:20:59:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:20:59:36 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:21:00:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:20:59:56 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:00:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:21:00:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:21:00:17 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:00:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:21:00:37 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:21:01:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:21:00:57 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:01:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:21:01:30 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:21:01:17 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:01:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:21:01:37 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:21:02:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:21:01:57 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:02:23 +1100] “GET /nextcloud/ocs/v2.php/apps/user_status/api/v1/user_status?format=json HTTP/1.1” 200 154
192.168.16.202 - Eric Luo [22/Nov/2021:21:02:23 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications?format=json HTTP/1.1” 304 -
192.168.16.202 - Eric Luo [22/Nov/2021:21:02:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:21:02:32 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:21:02:17 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:02:54 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244
192.168.16.202 - - [22/Nov/2021:21:02:37 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - - [22/Nov/2021:21:03:00 +1100] “GET /nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1” 304 -
192.168.16.202 - - [22/Nov/2021:21:02:57 +1100] “GET /nextcloud/index.php/apps/logreader/poll?lastReqId=8ooqeoDbqRNU33P9N0OE HTTP/1.1” 200 22
192.168.16.202 - Eric Luo [22/Nov/2021:21:03:24 +1100] “PROPFIND /nextcloud/remote.php/dav/files/Eric%20Luo/ HTTP/1.1” 207 244

 error_log

[Mon Nov 22 00:00:01.995585 2021] [mpm_prefork:notice] [pid 1614] AH00171: Graceful restart requested, doing restart
AH00558: httpd-prefork: Could not reliably determine the server's fully qualified domain name, using ::1. Set the 'ServerName' directive globally to suppress this message
[Mon Nov 22 00:00:02.004920 2021] [ssl:warn] [pid 1614] AH01909: 192.168.17.252:443:0 server certificate does NOT include an ID which matches the server name
[Mon Nov 22 00:00:02.005020 2021] [ssl:error] [pid 1614] AH02217: ssl_stapling_init_cert: can't retrieve issuer certificate! [subject: emailAddress=jinglinluo@protonmail.com,CN=nextcloud,OU=Family\\ ,O=Private Cloud,L=Melbourne,ST=VIC,C=AU / issuer: emailAddress=jinglinluo@protonmail.com,CN=nextcloud,OU=Family\\ ,O=Private Cloud,L=Melbourne,ST=VIC,C=AU / serial: 40078A4AD1CBDB1704BA395E21D750E975BBB3BD / notbefore: Nov 10 09:17:06 2021 GMT / notafter: Nov 10 09:17:06 2022 GMT]
[Mon Nov 22 00:00:02.005030 2021] [ssl:error] [pid 1614] AH02604: Unable to configure certificate 192.168.17.252:443:0 for stapling
[Mon Nov 22 00:00:02.019210 2021] [mpm_prefork:notice] [pid 1614] AH00163: Apache/2.4.43 (Linux/SUSE) OpenSSL/1.1.1d PHP/7.4.6 configured -- resuming normal operations
[Mon Nov 22 00:00:02.019231 2021] [core:notice] [pid 1614] AH00094: Command line: '/usr/sbin/httpd-prefork -D SYSCONFIG -D SSL -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apache2/sysconfig.d//global.conf -f /etc/apache2/httpd.conf -c Include /etc/apache2/sysconfig.d//include.conf -D SYSTEMD -D FOREGROUND'


Please click at the top right on your image (right side from “Search in Nextcloud”) in the Android nextcloud app and post some informations from your server settings. I think they are not correct. Also you can look in the nextlcoud gui (web access) and there you find in personal settingssecurityDevices & sesstions the connections from your mobile devices. Is there an access from Android.

If you like you can test with a free 60 minutes account.

https://try.nextcloud.com
User is 16 charaters long e.g. BWKwpZFy7qASgnmz (auto generated)
Password is: demo
Server is https://demo1.nextcloud.com or https://demo2.nextcloud.com

Same problem for me.
In my system, I can access my Nextcloud server through a VPN connection. At this moment I use HTTP:// connection not HTTPS://
All worked fine till the last update.
After that, no devices using Android app can access the server (I have 2 different devices and they have the same problem).
All Desktop in my lan works fine, all desktop out of my lan (using VPN) works fine.
Also my 2 android devices, working trough VPN from outside works fine but only using a browser.
No way with the app. “server not available”.
Also from my wlan (inside lan) the Androids doesn’t works.

Hello ! Exactly the same issue for me.
To be precise, everythings works from everywhere using webbrowser or desktop app (using VPN, no VPN, locally or globally) but the app only works when not on the same local network (i.e. does not work in VPN or lan).
Anyone found a solution yet ?

EDIT : I juste found the reason for the problem! Using LAN, it defaults to ipv4 but the nextcloud app seems only to accept ipv6 connection. So I added an ipv6 entry to my personnal dns (pihole) and now it seems everything work.

Thanks for letting us know.
Would my problem be have the same cause?
I get same message when on mobile data, changing to wifi and lan, solves this.
Originally I had disabled the upload over mobile data, enabling it did not make a difference.
I’ve looked in the settings but see no IPv6 details that ring a bell.

I also tried changing User account, after changed a new account(without space in the name) the error message is gone. However, the real issue still persists. I can log into the Android client, but the client can’t access to the server.
It just keeps loading. and never gets into the server.

Screenshot_20211201_205734_com.nextcloud.client

I’ve tested some more.
Also tested using the demo1.nextcloud.com server.
Same result.
The name of the jpg’s are shown, clicking will open them in the std jpg viewer of nc, however choosing to download them fails. It keeps loading or asks "Full image not available, load full picture from serve Yes/No.
downloding a df does not work either.
After a while a crash is reported, which I sent to github.

In some other application, which my develpers had made internally, I have encounterd that the versions OpenSSL libraries were not linke correctly. Hence browser approach worked, app access faild. May be a connection?
Possibly related to github issue:
“The nextcloud app does not support IPv6” #9457

Somehow the issue is resolved automaticlly. I didn’t do any thing.

I didn’t check my Android mobile client for about 2 weeks because there is no solution for this issue. Yesterday I tried to torubleshoot the issue again. I refreshed the loading page and it suddently worked. I can access every folder and the new picutures can be sycned.

After that, I tried to refresh the loading page on Android tablet client, I was logged out automatically. Then I tried to login with user account and passsword the error message 'There were too many requests from youyr network … ’ showed up. A few minutes later I created a app password and logged in with app token. Now it seems that everything works fine.

I think the issue is caused by authentication and account name regulation is one of the reasons.