Can't connect from Clients (Android / Windows) "Wrong Username or Password"

The issue you are facing:
Installed Nextcloud like manytimes before. But this time im not able to connect with Android or Windows App.
I’m running Plesk on this server and installed Nextcloud manually in a subdomain. The SSL cert im using is from Let’s Encrypt out of Plesk.

Nextcloud version (eg, 10.0.2): Nextcloud 12.0.2
Operating system and version (eg, Ubuntu 16.04): Debian 8 running Plesk
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 5.6): 7.1.9
Is this the first time you’ve seen this error?:
yes

Can you reliably replicate it? (If so, please outline steps):
yes

The output of your Nextcloud log in Admin > Logging:
Error PHP Undefined index: oauthState at /var/www/vhosts/sarhage.info/cloud.sarhage.info/core/templates/loginflow/authpicker.php#38 2017-09-14T08:49:33+0200
Error PHP Undefined index: oauthState at /var/www/vhosts/sarhage.info/cloud.sarhage.info/core/templates/loginflow/authpicker.php#38 2017-09-14T08:48:57+0200

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

    <?php
$CONFIG = array (
  'instanceid' => '***',
  'passwordsalt' => '***',
  'secret' => '***',
  'trusted_domains' =>
  array (
    0 => 'cloud.my.domain',
  ),
  'datadirectory' => '/var/www/vhosts/my.domain/cloud.my.domain/data',
  'overwrite.cli.url' => 'https://cloud.my.domain',
  'dbtype' => 'mysql',
  'version' => '12.0.2.0',
  'dbname' => 'name',
  'dbhost' => 'host',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'user',
  'dbpassword' => 'password',
  'installed' => true,
);

The output of your Apache/nginx/system log in /var/log/____:
error_log:

[Wed Sep 13 17:35:00.580816 2017] [proxy_fcgi:error] [pid 27738] [client 37.24.94.34:51058] AH01071: Got error 'PHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"touch(): Utime failed: Permission denied at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#239","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fopen(\\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/config\\/config.php): failed to open stream: Permission denied at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#240","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"chmod(): Operation not permitted at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#243","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"Doctrine\\\\DBAL\\\\DBALException: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [14] unable to open database file at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/DB\\/Connection.php#61","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: {"reqId":"NSUcTohF1fYv53rP0OWD","level":3,"time":"2017-09-13T15:35:00+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"chmod(): No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#123","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\n'
[Wed Sep 13 17:37:06.323593 2017] [authz_core:error] [pid 27582] [client 178.254.38.20:37028] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/htaccesstest.txt
[Wed Sep 13 17:37:54.773141 2017] [authz_core:error] [pid 28253] [client 178.254.38.20:39912] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/htaccesstest.txt
[Wed Sep 13 17:38:18.271793 2017] [authz_core:error] [pid 27738] [client 178.254.38.20:41312] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/htaccesstest.txt
[Wed Sep 13 17:40:33.201653 2017] [proxy_fcgi:error] [pid 28269] [client 37.24.94.34:51223] AH01071: Got error 'PHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"file_get_contents(\\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/appdata_ocfv64yovrl4\\/js\\/core\\/merged-template-prepend.js.deps): failed to open stream: No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Files\\/Storage\\/Local.php#209","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"Invalid argument supplied for foreach() at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Template\\/JSCombiner.php#107","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\nPH'
[Wed Sep 13 17:40:33.201717 2017] [proxy_fcgi:error] [pid 28269] [client 37.24.94.34:51223] AH01071: Got error 'P message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"file_get_contents(\\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/appdata_ocfv64yovrl4\\/css\\/core\\/9d6ce41744bc67ce78bbb71b4c32323d-server.css.deps): failed to open stream: No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Files\\/Storage\\/Local.php#209","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"Invalid argument supplied for foreach() at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Template\\/SCSSCacher.php#145","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"file_get_contents(\\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/appdata_ocfv64yovrl4\\/css\\/core\\/9d6ce41744bc67ce78bbb71b4c32323d-share.css.deps): failed to open stream: No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Files\\/Storage\\/Local.php#209","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"Invalid argument supplied for foreach() at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Template\\/SCSSCacher.php#145","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\n'
[Wed Sep 13 17:40:33.206264 2017] [proxy_fcgi:error] [pid 28269] [client 37.24.94.34:51223] AH01071: Got error 'PHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\nPHP message: {"reqId":"8nglVDAhVFJgYbMbtrdu","level":3,"time":"2017-09-13T15:40:33+00:00","remoteAddr":"37.24.94.34","user":"cloudadmin","app":"PHP","method":"GET","url":"\\/ocs\\/v2.php\\/apps\\/notifications\\/api\\/v2\\/notifications","message":"chmod(): No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#123","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":"12.0.2.0"}\n'
[Wed Sep 13 17:41:00.194450 2017] [authz_core:error] [pid 28253] [client 37.24.94.34:51232] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Wed Sep 13 17:41:59.613344 2017] [authz_core:error] [pid 28716] [client 37.24.94.34:51248] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Wed Sep 13 17:42:19.224662 2017] [authz_core:error] [pid 28802] [client 37.24.94.34:51268] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Wed Sep 13 17:43:22.257631 2017] [authz_core:error] [pid 28253] [client 37.24.94.34:51290] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Wed Sep 13 17:44:46.150884 2017] [authz_core:error] [pid 28901] [client 37.24.94.34:51329] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Wed Sep 13 17:46:33.133155 2017] [proxy_fcgi:error] [pid 28916] [client 37.24.94.34:51364] AH01071: Got error 'PHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"touch(): Utime failed: Permission denied at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#239","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fopen(\\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/config\\/config.php): failed to open stream: Permission denied at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#240","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"r', referer: https://cloud.my.domain/
[Wed Sep 13 17:46:33.133215 2017] [proxy_fcgi:error] [pid 28916] [client 37.24.94.34:51364] AH01071: Got error 'eqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"chmod(): Operation not permitted at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#243","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: {"reqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"Doctrine\\\\DBAL\\\\DBALException: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [14] unable to open database file at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/DB\\/Connection.php#61","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: {"reqId":"Ym0HKYQ525BSYhYWzH7s","level":3,"time":"2017-09-13T15:46:33+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"chmod(): No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#123","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\n', referer: https://cloud.my.domain/
[Wed Sep 13 17:46:34.916983 2017] [proxy_fcgi:error] [pid 28918] [client 37.24.94.34:51365] AH01071: Got error 'PHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"touch(): Utime failed: Permission denied at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#239","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fopen(\\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/config\\/config.php): failed to open stream: Permission denied at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#240","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"r'
[Wed Sep 13 17:46:34.917040 2017] [proxy_fcgi:error] [pid 28918] [client 37.24.94.34:51365] AH01071: Got error 'eqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"chmod(): Operation not permitted at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Config.php#243","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: {"reqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"Doctrine\\\\DBAL\\\\DBALException: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [14] unable to open database file at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/DB\\/Connection.php#61","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: PHP Warning:  fileperms(): stat failed for /var/www/vhosts/my.domain/cloud.my.domain/data/nextcloud.log in /var/www/vhosts/my.domain/cloud.my.domain/lib/private/Log/File.php on line 122\nPHP message: {"reqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"fileperms(): stat failed for \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/data\\/nextcloud.log at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#122","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\nPHP message: {"reqId":"xD0kTRNVLNc1wb5VJ1wU","level":3,"time":"2017-09-13T15:46:34+00:00","remoteAddr":"37.24.94.34","user":"--","app":"PHP","method":"GET","url":"\\/index.php","message":"chmod(): No such file or directory at \\/var\\/www\\/vhosts\\/my.domain\\/cloud.my.domain\\/lib\\/private\\/Log\\/File.php#123","userAgent":"Mozilla\\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\\/537.36 (KHTML, like Gecko) Chrome\\/60.0.3112.113 Safari\\/537.36","version":""}\n'
[Wed Sep 13 17:57:31.349651 2017] [authz_core:error] [pid 29287] [client 37.24.94.34:51789] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Wed Sep 13 17:58:32.259922 2017] [autoindex:error] [pid 29368] [client 37.24.94.34:51826] AH01276: Cannot serve directory /var/www/vhosts/my.domain/cloud.my.domain/core/doc/user/_static/: No matching DirectoryIndex (index.html,index.cgi,index.pl,index.php,index.xhtml,index.htm,index.shtml) found, and server-generated directory index forbidden by Options directive, referer: https://cloud.my.domain/core/doc/user/index.html
[Wed Sep 13 18:05:48.699081 2017] [proxy_fcgi:error] [pid 29537] [client 37.24.94.34:52006] AH01068: Got bogus version 100
[Wed Sep 13 18:05:48.699130 2017] [proxy_fcgi:error] [pid 29537] (22)Invalid argument: [client 37.24.94.34:52006] AH01075: Error dispatching request to : (passing brigade to output filters)
[Wed Sep 13 18:07:15.122539 2017] [proxy_fcgi:error] [pid 29365] [client 37.24.94.34:52105] AH01068: Got bogus version 116
[Wed Sep 13 18:07:15.122572 2017] [proxy_fcgi:error] [pid 29365] (22)Invalid argument: [client 37.24.94.34:52105] AH01075: Error dispatching request to : (passing brigade to output filters)
[Wed Sep 13 18:15:08.018691 2017] [proxy_fcgi:error] [pid 29536] [client 37.24.94.34:52356] AH01068: Got bogus version 105
[Wed Sep 13 18:15:08.018729 2017] [proxy_fcgi:error] [pid 29536] (22)Invalid argument: [client 37.24.94.34:52356] AH01075: Error dispatching request to : (passing brigade to output filters)
[Wed Sep 13 18:21:11.094603 2017] [proxy_fcgi:error] [pid 29941] [client 37.24.94.34:52524] AH01068: Got bogus version 95
[Wed Sep 13 18:21:11.094634 2017] [proxy_fcgi:error] [pid 29941] (22)Invalid argument: [client 37.24.94.34:52524] AH01075: Error dispatching request to : (passing brigade to output filters)
[Wed Sep 13 18:21:43.359208 2017] [proxy_fcgi:error] [pid 29951] [client 37.24.94.34:52531] AH01068: Got bogus version 82
[Wed Sep 13 18:21:43.359250 2017] [proxy_fcgi:error] [pid 29951] (22)Invalid argument: [client 37.24.94.34:52531] AH01075: Error dispatching request to : (passing brigade to output filters)
[Wed Sep 13 18:27:58.919808 2017] [proxy_fcgi:error] [pid 30202] [client 37.24.94.34:52661] AH01068: Got bogus version 103
[Wed Sep 13 18:27:58.919839 2017] [proxy_fcgi:error] [pid 30202] (22)Invalid argument: [client 37.24.94.34:52661] AH01075: Error dispatching request to : (passing brigade to output filters)
[Thu Sep 14 08:02:45.040185 2017] [authz_core:error] [pid 30520] [client 37.24.94.34:50655] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Thu Sep 14 08:02:49.199950 2017] [authz_core:error] [pid 15341] [client 37.24.94.34:50661] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Thu Sep 14 08:03:12.117133 2017] [authz_core:error] [pid 15342] [client 37.24.94.34:50667] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Thu Sep 14 08:59:20.956185 2017] [authz_core:error] [pid 2164] [client 37.24.94.34:52243] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Thu Sep 14 08:59:23.373779 2017] [authz_core:error] [pid 2169] [client 37.24.94.34:52245] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Thu Sep 14 08:59:25.255592 2017] [authz_core:error] [pid 2118] [client 37.24.94.34:52241] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata
[Thu Sep 14 09:01:57.971337 2017] [authz_core:error] [pid 2170] [client 37.24.94.34:52273] AH01630: client denied by server configuration: /var/www/vhosts/my.domain/cloud.my.domain/data/.ocdata

In adb logcat i can see it got code -1(success) after inserting the domain. After this the app sends me to user login i didnt entered the credentials this time and i get instantly the status 401

adb logcat while connecting:

 09-14 09:17:45.482  2976  3128 D ConnectivityService: updateNetworkScore for NetworkAgentInfo [WIFI () - 144] to 60
09-14 09:17:45.884  7221  7245 W HttpMethodBase: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.
09-14 09:17:45.886  7221  7245 I GetRemoteStatusOperation: Connection check at https://cloud.my.domain: Operation finished with HTTP status code -1 (success)
09-14 09:17:45.886  7221  7245 D GetServerInfoOperation: Trying empty authorization to detect authentication method
09-14 09:17:45.886  7221  7245 D OwnCloudClient #3: REQUEST HEAD /remote.php/webdav/
09-14 09:17:46.128  7221  7245 D ExistenceCheckRemoteOperation: Existence check for https://cloud.my.domain/remote.php/webdav/ targeting for  existence finished with HTTP status 401(FAIL)
09-14 09:17:46.128  7221  7245 D DetectAuthenticationMethodOperation: Authentication method found: BASIC_HTTP_AUTH
09-14 09:17:46.137  7221  7245 D OperationsService: Called 1 listeners

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