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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
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Or for longer, use three backticks above and below the code snippet:
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Some or all of the below information will be requested if it isnât supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 20.0.7
Operating system and version (eg, Ubuntu 20.04): Linux 5.10.28-Unraid x86_64
Apache or nginx version (eg, Apache 2.4.25): nginx/1.20.2 (fpm-fcgi)
PHP version (eg, 7.4): 7.4.26
The issue you are facing:
My windows 10 machine stops updating now. When I check the logs located on appdata\nextcloud\log\php\error.log I get the following info:
[12-Dec-2021 02:00:01] NOTICE: fpm is running, pid 2027
[12-Dec-2021 02:00:01] NOTICE: ready to handle connections
[13-Dec-2021 01:00:32] NOTICE: Terminating âŚ
[13-Dec-2021 01:00:32] NOTICE: exiting, bye-bye!
[13-Dec-2021 01:03:42] NOTICE: fpm is running, pid 394
[13-Dec-2021 01:03:42] NOTICE: ready to handle connections
[13-Dec-2021 03:00:11] NOTICE: Terminating âŚ
[13-Dec-2021 03:00:11] NOTICE: exiting, bye-bye!
[14-Dec-2021 11:37:01] NOTICE: fpm is running, pid 405
[14-Dec-2021 11:37:01] NOTICE: ready to handle connections
[14-Dec-2021 11:52:25] NOTICE: Terminating âŚ
[14-Dec-2021 11:52:25] NOTICE: exiting, bye-bye!
[14-Dec-2021 11:52:51] NOTICE: fpm is running, pid 403
[14-Dec-2021 11:52:51] NOTICE: ready to handle connections
[14-Dec-2021 13:54:31] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 6 total children
[14-Dec-2021 13:54:32] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idle, and 7 total children
[14-Dec-2021 14:26:13] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 6 total children
[15-Dec-2021 10:32:04] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 6 total children
[15-Dec-2021 10:32:18] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 6 total children
Is this the first time youâve seen this error? (Y/N):Y
Steps to replicate it:
- Open Nextcloud
The output of your Nextcloud log in Admin > Logging:
{"reqId":"jNDBK1N7vaDss94Uk2nK","level":4,"time":"2021-12-13T09:00:08+00:00","remoteAddr":"47.221.239.108","user":"shendrix","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/files/shendrix/","message":{"Exception":"Sabre\\DAV\\Exception\\ServiceUnavailable","Message":"Doctrine\\DBAL\\Exception\\DriverException: An exception occurred while executing 'SELECT `id`, `numeric_id`, `available`, `last_checked` FROM `oc_storages` WHERE `id` = ?' with params [\"home::shendrix\"]:\n\nSQLSTATE[HY000]: General error: 2006 MySQL server has gone away","Code":0,"Trace":[{"file":"/config/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php","line":192,"function":"check","class":"OCA\\DAV\\Connector\\Sabre\\Auth","type":"->"},{"file":"/config/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php","line":144,"function":"check","class":"Sabre\\DAV\\Auth\\Plugin","type":"->"},{"file":"/config/www/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"beforeMethod","class":"Sabre\\DAV\\Auth\\Plugin","type":"->"},{"file":"/config/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":458,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/config/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":251,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/config/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":319,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/config/www/nextcloud/apps/dav/lib/Server.php","line":332,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/config/www/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/config/www/nextcloud/remote.php","line":167,"args":["/config/www/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/config/www/nextcloud/apps/dav/lib/Connector/Sabre/Auth.php","Line":163,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Windows) mirall/3.4.0stable-Win64 (build 20211129) (Nextcloud, windows-10.0.19044 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"20.0.7.1"}
{"reqId":"2VIfjCWjZvguZPA1LK97","level":2,"time":"2021-12-14T15:11:27+00:00","remoteAddr":"71.14.139.183","user":"--","app":"no app in context","method":"POST","url":"/login","message":"Login failed: xxxxx (Remote IP: xx.xx.xxx.xxx)","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36 Edg/96.0.1054.53","version":"20.0.7.1"}
output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'memcache.local' => '\\OC\\Memcache\\APCu',
'datadirectory' => '/data',
'instanceid' => 'xxxxxx',
'passwordsalt' => 'xxx/xxx/xxx',
'secret' => 'xxxxxx',
'trusted_domains' =>
array (
0 => '192.168.1.xx:444',
1 => 'nextcloud.xxxxxx.com',
),
'dbtype' => 'mysql',
'version' => '20.0.7.1',
'overwrite.cli.url' => 'https://nextcloud.xxxxxx.com',
'overwritehost' => 'nextcloud.xxxxxx.com',
'overwriteprotocol' => 'https',
'dbname' => 'nextcloud',
'dbhost' => '192.168.1.xx:3306',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'xxxxxx',
'dbpassword' => 'xxxxxx',
'installed' => true,
'maintenance' => false,
);
copied from \appdata\nextcloud\www\nextcloud\config\config.php
The output of your Apache/nginx/system log in /var/log/____:
2021/12/13 03:00:08 [error] 415#415: *1781 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Class 'OCA\DAV\Connector\Sabre\ExceptionLoggerPlugin' not found in /config/www/nextcloud/remote.php:61
Stack trace:
#0 /config/www/nextcloud/remote.php(169): handleException()
#1 {main}
thrown in /config/www/nextcloud/remote.php on line 61" while reading response header from upstream, client: 71.14.139.183, server: _, request: "PROPFIND /remote.php/dav/files/xxxxxx/ HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
2021/12/14 11:37:23 [error] 431#431: *109 upstream prematurely closed FastCGI request while reading upstream, client: xx.xxx.xxx.xxx, server: _, request: "GET /remote.php/dav/files/shendrix/Desktop/iPipeline%20Template.txt HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
2021/12/14 11:38:06 [error] 431#431: *354 upstream prematurely closed FastCGI request while reading upstream, client: xx.xxx.xxx.xxx, server: _, request: "GET /remote.php/dav/files/shendrix/Desktop/iPipeline%20Template.txt HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
2021/12/14 11:53:55 [error] 429#429: *77 upstream prematurely closed FastCGI request while reading upstream, client: xx.xxx.xxx.xxx, server: _, request: "GET /remote.php/dav/files/shendrix/Desktop/iPipeline%20Template.txt HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
2021/12/14 12:45:46 [error] 429#429: *1427 upstream prematurely closed FastCGI request while reading upstream, client: xx.xxx.xxx.xxx, server: _, request: "GET /remote.php/dav/files/shendrix/Desktop/iPipeline%20Template.txt HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
2021/12/14 13:55:36 [error] 429#429: *10246 upstream prematurely closed FastCGI request while reading upstream, client: xx.xxx.xxx.xxx, server: _, request: "GET /remote.php/dav/files/shendrix/Desktop/iPipeline%20Template.txt HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
2021/12/14 19:55:51 [error] 429#429: *20107 upstream prematurely closed FastCGI request while reading upstream, client: xx.xxx.xxx.xxx, server: _, request: "GET /remote.php/dav/files/shendrix/Desktop/iPipeline%20Template.txt HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "nextcloud.xxxxxx.com"
copied from \appdata\nextcloud\log\nginx\error.log