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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:
example
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Nextcloud version: 19.0.4.2
Operating system and version: Ubuntu 18.04.5 LTS
Apache version: Apache/2.4.46 (Ubuntu)
PHP Version => 7.2.34-8+ubuntu18.04.1+deb.sury.org+1
The issue you are facing:
Internal Server Error
The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.
‘’’
Is this the first time you’ve seen this error? (Y/N): YES
Steps to replicate it:
- sudo systemctl restart apache2 && systemctl restart mariadb
- rm /var/lib/mysql/tc.log
- remove all php and install new (apt-get install php7.1-fpm php7.1 php7.1-xml php7.1 php7.1-cgi php7.1-cli php7.1-gd php7.1-curl php7.1-zip php7.1-mysql php7.1-mbstring)
The first issue I saw when I add a new User. Then I found the second issue with not enough space. I’ve removed some files from nextcloud/data and finally add more storage.
I’m trying to find solutions and apter this bellow system works 1 day 
Currently I have still a problem and I don’t know this fix it
1865 rm /var/lib/mysql/tc.log
1866 sudo systemctl restart mysql.service
1868 sudo systemctl restart apache2
1869 sudo apt install xml-core php7.3-xml php7.3-zip php7.3-mbstring php7.3-mysql php7.3-gd php7.3-curl php7.3-intl
1870 sudo systemctl restart apache2
1871 sudo systemctl status mysql.service
1874 zgrep -E "^(Remove:|Purge)" /var/log/apt/history.log*
1875 su -u www-data php /var/www/html/nextcloud/occ maintenance:repair
1876 cd /var/www/html/nextcloud/
1882 sudo -u www-data php occ maintenance:repair
1883 sudo -u www-data php occ check
1884 rm /var/lib/mysql/tc.log
1886 sudo systemctl status mariadb
1887 sudo systemctl
1888 df -h
1889 mc
1890 df -h
1891 reboot
1892 zgrep -E "^(Remove:|Purge)" /var/log/apt/history.log*
1893 /var/log/apt/history.log:Remove: php7.3-xml:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), php7.3-zip:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), php7.3-mbstring:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), sgml-base:amd64 (1.29), php7.0-gd:amd64 (7.0.33-25+0~20200225.32+debian9~1.gbpa11893), libicu64:amd64 (64.1-0.1+0~20190410090943.5+stretch~1.gbp38f694), php7.3-mysql:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), php7.3-gd:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), php7.3-curl:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), php7.3-intl:amd64 (7.3.15-4+0~20200224.55+debian9~1.gbpbea824), xml-core:amd64 (0.17), php7.0-mbstring:amd64 (7.0.33-25+0~20200225.32+debian9~1.gbpa11893), php7.0-curl:amd64 (7.0.33-25+0~20200225.32+debian9~1.gbpa11893), php7.0-zip:amd64 (7.0.33-25+0~20200225.32+debian9~1.gbpa11893), php7.0-intl:amd64 (7.0.33-25+0~20200225.32+debian9~1.gbpa11893), php7.0-mysql:amd64 (7.0.33-25+0~20200225.32+debian9~1.gbpa11893)
1895 clear
1896 ls -l /var/www/html/nextcloud/
1904 sudo -u www-data php /var/www/nextcloud/occ files:scan --all
1905 cd /var/www/nextcloud/
1906 cd /var/www/html/nextcloud/
1909 sudo -u www-data php ./occ files:scan --all
1910 sudo systemctl restart apache2
1911 systemctl restart mariadb
The output of your Nextcloud log in Admin > Logging:
tail -f /var/www/html/nextcloud/data/nextcloud.log | jq
{
{
"file": "/var/www/html/nextcloud/lib/private/Files/Stream/Encryption.php",
"line": 501,
"function": "decrypt",
"class": "OCA\\Encryption\\Crypto\\Encryption",
"type": "->",
"args": [
"*** sensitive parameters replaced ***"
]
},
{
"file": "/var/www/html/nextcloud/lib/private/Files/Stream/Encryption.php",
"line": 299,
"function": "readCache",
"class": "OC\\Files\\Stream\\Encryption",
"type": "->",
"args": []
},
{
"function": "stream_read",
"class": "OC\\Files\\Stream\\Encryption",
"type": "->",
"args": [
8192
]
},
{
"file": "/var/www/html/nextcloud/3rdparty/icewind/streams/src/Wrapper.php",
"line": 91,
"function": "fread",
"args": [
null,
8192
]
},
{
"file": "/var/www/html/nextcloud/3rdparty/icewind/streams/src/CallbackWrapper.php",
"line": 98,
"function": "stream_read",
"class": "Icewind\\Streams\\Wrapper",
"type": "->",
"args": [
8192
]
},
{
"function": "stream_read",
"class": "Icewind\\Streams\\CallbackWrapper",
"type": "->",
"args": [
8192
]
},
{
"file": "/var/www/html/nextcloud/3rdparty/sabre/http/lib/Sapi.php",
"line": 108,
"function": "stream_copy_to_stream",
"args": [
null,
null,
3867
]
},
{
"file": "/var/www/html/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php",
"line": 492,
"function": "sendResponse",
"class": "Sabre\\HTTP\\Sapi",
"type": "::",
"args": [
{
"__class__": "Sabre\\HTTP\\Response"
}
]
},
{
"file": "/var/www/html/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php",
"line": 251,
"function": "invokeMethod",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": [
{
"__class__": "Sabre\\HTTP\\Request"
},
{
"__class__": "Sabre\\HTTP\\Response"
}
]
},
{
"file": "/var/www/html/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php",
"line": 319,
"function": "start",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": []
},
{
"file": "/var/www/html/nextcloud/apps/dav/lib/Server.php",
"line": 320,
"function": "exec",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": []
},
{
"file": "/var/www/html/nextcloud/apps/dav/appinfo/v2/remote.php",
"line": 35,
"function": "exec",
"class": "OCA\\DAV\\Server",
"type": "->",
"args": []
},
{
"file": "/var/www/html/nextcloud/remote.php",
"line": 167,
"args": [
"/var/www/html/nextcloud/apps/dav/appinfo/v2/remote.php"
],
"function": "require_once"
}
],
"File": "/var/www/html/nextcloud/apps/encryption/lib/Crypto/Crypt.php",
"Line": 503,
"Hint": "Zła sygnatura",
"CustomMessage": "--"
},
"userAgent": "Mozilla/5.0 (Windows) mirall/3.0.3stable-Win64 (build 20201029) (Nextcloud)",
"version": "19.0.4.2"
}
{
"reqId": "Xyica6av9unln9XWJ9O6",
"level": 3,
"time": "2020-12-22T21:54:39+00:00",
"remoteAddr": "1.2.3.4",
"user": "JACK",
"app": "PHP",
"method": "GET",
"url": "/remote.php/dav/files/JACK/Foto/IMG-20200514-WA0005.jpg",
"message": "Module 'apc' already loaded at Unknown#0",
"userAgent": "Mozilla/5.0 (Windows) mirall/3.0.3stable-Win64 (build 20201029) (Nextcloud)",
"version": "19.0.4.2"
}
{
"reqId": "IFKzY2u2rW3Q3ER9teL2",
"level": 3,
"time": "2020-12-22T21:54:39+00:00",
"remoteAddr": "1.2.3.4",
"user": "JACK",
"app": "PHP",
"method": "GET",
"url": "/remote.php/dav/files/JACK/Foto/IMG-20200514-WA0006.jpg",
"message": "Module 'apc' already loaded at Unknown#0",
"userAgent": "Mozilla/5.0 (Windows) mirall/3.0.3stable-Win64 (build 20201029) (Nextcloud)",
"version": "19.0.4.2"
}
{
"reqId": "HA9yhn3myTrzfR5XVu9w",
"level": 3,
"time": "2020-12-22T21:55:26+00:00",
"remoteAddr": "",
"user": "--",
"app": "PHP",
"method": "",
"url": "--",
"message": "Module 'apc' already loaded at Unknown#0",
"userAgent": "--",
"version": "19.0.4.2"
}
{
"reqId": "Rnn4kdsttw7vkGVUBrUh",
"level": 3,
"time": "2020-12-22T22:10:18+00:00",
"remoteAddr": "",
"user": "--",
"app": "PHP",
"method": "",
"url": "--",
"message": "Module 'apc' already loaded at Unknown#0",
"userAgent": "--",
"version": "19.0.4.2"
}
{
"reqId": "4CxNjpCmn5d8m5FvIFuL",
"level": 3,
"time": "2020-12-22T22:11:16+00:00",
"remoteAddr": "",
"user": "--",
"app": "PHP",
"method": "",
"url": "--",
"message": "Module 'apc' already loaded at Unknown#0",
"userAgent": "--",
"version": "19.0.4.2"
}
{
"reqId": "Bo6pOlql84RuqvxfK7SI",
"level": 3,
"time": "2020-12-22T22:18:25+00:00",
"remoteAddr": "",
"user": "--",
"app": "PHP",
"method": "",
"url": "--",
"message": "Module 'apc' already loaded at Unknown#0",
"userAgent": "--",
"version": "19.0.4.2"
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'oc5r89eyfbgj',
'passwordsalt' => 'pFW//nsId3csE3jUv9TEmbSy4d45ij',
'secret' => '3zkXsBPZ0ZuoLEZS6pjbC1WqE7Cs7rH30aYowD+f0RpiPLg3',
'trusted_domains' =>
array (
0 => '1.2.3.4',
1 => 'nextcloud.superdomain.pl',
),
'datadirectory' => '/var/www/html/nextcloud/data',
'dbtype' => 'mysql',
'version' => '19.0.4.2',
'overwrite.cli.url' => 'http://1.2.3.4',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'dbuser' => 'nextcloud',
'dbpassword' => 'QpOuCjq2jP9ss32342342423Tr9qTRjUu',
'installed' => true,
'app_install_overwrite' =>
array (
0 => 'admin_notifications',
1 => 'ocsms',
2 => 'spgverein',
3 => 'activitylog',
4 => 'ocr',
5 => 'twofactor_rcdevsopenotp',
6 => 'files_accesscontrol',
7 => 'dashboard',
8 => 'radio',
9 => 'dashboardcharts',
),
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_smtphost' => 'smtp.gmail.com',
'mail_smtpport' => '465',
'mail_smtpauth' => 1,
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpsecure' => 'ssl',
'mail_smtpname' => 'jackjack@gmail.com',
'mail_smtppassword' => 'secret',
'mail_from_address' => 'jackjack@gmail',
'mail_domain' => 'gmail.com',
'maintenance' => false,
'theme' => '',
'loglevel' => 2,
'logfile' => '/var/log/nextcloud.log',
'logfilemode' => 0640,
'updater.secret' => '$2y$10$x2W6/oYYhDgZl5z/CUX8uedQpbW6XWLHMA2mxOrurb7hxfxhG2G5a',
);
The output of your Apache/nginx/system log in /var/log/____:
{"file":"/var/www/html/nextcloud/lib/base.php","line":1094,"function":"init","class":"OC","type":"::","args":[]},{"file":"/var/www/html/nextcloud/index.php","line":35,"args":["/var/www/html/nextcloud/lib/base.php"],"function":"require_once"}],"File":"/var/www/html/nextcloud/lib/private/DB/Connection.php","Line":67,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36 Edg/87.0.664.66","version":"19.0.4.2"}, referer: https://nextcloud.jacksite.pl/
[Tue Dec 22 23:11:15.103668 2020] [php7:notice] [pid 17057] [client 1.2.3.4:58786] {"reqId":"ndrISOFkVicLiowo2qC5","level":3,"time":"2020-12-22T23:11:15+00:00","remoteAddr":"1.2.3.4","user":"--","app":"core","method":"GET","url":"/index.php","message":{"Exception":"Doctrine\\\\DBAL\\\\DBALException","Message":"Failed to connect to the database: An exception occurred in driver: SQLSTATE[HY000] [2002] No such file or directory","Code":0,"Trace":[{"file":"/var/www/html/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php","line":889,"function":"connect","class":"OC\\\\DB\\\\Connection","type":"->","args":[]},{"file":"/var/www/html/nextcloud/lib/private/DB/Connection.php","line":194,"function":"executeQuery","class":"Doctrine\\\\DBAL\\\\Connection","type":"->","args":["SELECT * FROM `oc_appconfig`",[],[],null]},{"file":"/var/www/html/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php","line":200,"function":"executeQuery","class":"OC\\\\DB\\\\Connection","type":"->","args":["SELECT * FROM `oc_appconfig`",[],[]]},{"file":"/var/www/html/nextcloud/lib/private/DB/QueryBuilder/QueryBuilder.php","line":216,"function":"execute","class":"Doctrine\\\\DBAL\\\\Query\\\\QueryBuilder","type":"->","args":[]},{"file":"/var/www/html/nextcloud/lib/private/AppConfig.php","line":331,"function":"execute","class":"OC\\\\DB\\\\QueryBuilder\\\\QueryBuilder","type":"->","args":[]},{"file":"/var/www/html/nextcloud/lib/private/AppConfig.php","line":109,"function":"loadConfigValues","class":"OC\\\\AppConfig","type":"->","args":[]},{"file":"/var/www/html/nextcloud/lib/private/AppConfig.php","line":287,"function":"getApps","class":"OC\\\\AppConfig","type":"->","args":[]},
