Nextcloud 19.0.0.12: blank screen / HTTP error 500

bsafh · October 31, 2020, 6:38pm

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Nextcloud version (eg, 18.0.2): 19.0.0.12
Operating system and version (eg, Ubuntu 20.04): docker
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 7.1): 7.4.6

The issue you are facing:

After upgrading to NC 19.0.0.12 using

php occ app:update --all
php occ upgrade

and no errors showing up

nc just shows a blank page, the logs show HTTP error 500

remote sync using the Andoid app seems to still work

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

php occ
just returns to the prompt without showing anything
php occ somegarbage
does reurn to the prompt as well without any error, and without any log entry in nextcloud.log or the apache log

Steps to replicate it:

browse to any page on nc
php occ

The output of your Nextcloud log in Admin > Logging:



{"reqId":"B17KK3S2Nz9Cb3duboMC","level":0,"time":"2020-10-31T18:29:05+00:00","remoteAddr":"91.22.104.214","user":"--","app":"user_sql","method":"GET","url":"/","message":"The application properties has been loaded.","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":"19.0.0.12"}
{"reqId":"tT07oHL99k1YiSvMXTrA","level":0,"time":"2020-10-31T18:29:05+00:00","remoteAddr":"91.22.104.214","user":"--","app":"user_sql","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/","message":"The application properties has been loaded.","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"B17KK3S2Nz9Cb3duboMC","level":3,"time":"2020-10-31T18:29:05+00:00","remoteAddr":"91.22.104.214","user":"--","app":"PHP","method":"GET","url":"/","message":"Cannot redeclare composerRequirecc67855a12c2e40a8768edc62260d8c5() (previously declared in /var/www/html/apps/bookmarks/vendor/composer/autoload_real.php:54) at /var/www/html/custom_apps/bookmarks/vendor/composer/autoload_real.php#54","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":"19.0.0.12"}
{"reqId":"tT07oHL99k1YiSvMXTrA","level":0,"time":"2020-10-31T18:29:07+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/","message":"loading latest model","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"tT07oHL99k1YiSvMXTrA","level":0,"time":"2020-10-31T18:29:07+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/","message":"loading model 141 from app data","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"tT07oHL99k1YiSvMXTrA","level":4,"time":"2020-10-31T18:29:08+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/","message":"Could not load classifier model 141: /appdata_ocvp55efbtjc/suspicious_login/models","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"tT07oHL99k1YiSvMXTrA","level":2,"time":"2020-10-31T18:29:08+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/","message":"Could not predict suspiciousness: Could not load model 141","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"bXgoiBJwjnqhSCZ816FG","level":0,"time":"2020-10-31T18:29:11+00:00","remoteAddr":"91.22.104.214","user":"--","app":"user_sql","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/personal/","message":"The application properties has been loaded.","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"bXgoiBJwjnqhSCZ816FG","level":0,"time":"2020-10-31T18:29:13+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/personal/","message":"loading latest model","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"bXgoiBJwjnqhSCZ816FG","level":0,"time":"2020-10-31T18:29:13+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/personal/","message":"loading model 141 from app data","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"bXgoiBJwjnqhSCZ816FG","level":4,"time":"2020-10-31T18:29:15+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/personal/","message":"Could not load classifier model 141: /appdata_ocvp55efbtjc/suspicious_login/models","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"bXgoiBJwjnqhSCZ816FG","level":2,"time":"2020-10-31T18:29:15+00:00","remoteAddr":"91.22.104.214","user":"christian","app":"suspicious_login","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/personal/","message":"Could not predict suspiciousness: Could not load model 141","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}
{"reqId":"MO1nV6z8P2n89HPEf02M","level":0,"time":"2020-10-31T18:29:15+00:00","remoteAddr":"91.22.104.214","user":"--","app":"user_sql","method":"PROPFIND","url":"/remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/","message":"The application properties has been loaded.","userAgent":"OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10","version":"19.0.0.12"}

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

<?php
$CONFIG = array (
  'instanceid' => 'xxxxxxx',
  'passwordsalt' => 'xxxxxx',
  'secret' => 'xxxxxxxx,
  'apps_paths' => 
  array (
    0 => 
    array (
      'path' => '/var/www/html/apps',
      'url' => '/apps',
      'writable' => false,
    ),
    1 => 
    array (
      'path' => '/var/www/html/custom_apps',
      'url' => '/custom_apps',
      'writable' => true,
    ),
  ),
  'memcache.distributed' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => 'redis',
    'password' => false,
    'port' => 6379,
  ),
  'trusted_domains' => 
  array (
    0 => 'a',
    1 => 'b',
 ),
  'datadirectory' => '/var/www/html/data',
  'trashbin_retention_obligation' => 'auto',
  'filesystem_check_changes' => 1,
  'dbtype' => 'mysql',
  'version' => '19.0.0.12',
  'overwrite.cli.url' => 'http://bla:81',
  'dbname' => 'xxxxxx',
  'dbhost' => 'db:3306',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'xxxxxx',
  'dbpassword' => 'xxxxxxxx',
  'installed' => true,
  'mail_smtpmode' => 'smtp',
  'mail_smtpsecure' => 'ssl',
  'mail_sendmailmode' => 'smtp',
  'mail_from_address' => 'name',
  'mail_domain' => 'host.com',
  'mail_smtpauthtype' => 'PLAIN',
  'mail_smtpauth' => 1,
  'mail_smtphost' => 'smtp.host.com',
  'mail_smtpport' => '465',
  'mail_smtpname' => 'name@host.com',
  'mail_smtppassword' => 'xxxxxxx',
  'maintenance' => false,
  'ldapIgnoreNamingRules' => false,
  'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
  'loglevel' => 0,
  'app_install_overwrite' => 
  array (
    0 => 'social',
  ),
  'overwriteprotocol' => 'https',
  'overwritehost' => 'cloud.name.net',
  'trusted_proxies' => 
  array (
    0 => '192.168.80.134',
    1 => '192.168.80.0/24',
    2 => '172.19.0.0/16',
  ),
  'theme' => '',
);

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

172.24.0.1 - - [31/Oct/2020:18:30:13 +0000] "GET / HTTP/1.0" 500 885 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0"
 172.24.0.1 - christian [31/Oct/2020:18:30:37 +0000] "PROPFIND /remote.php/dav/calendars/christian/personal/ HTTP/1.0" 207 2154 "-" "OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10"
 172.24.0.1 - christian [31/Oct/2020:18:30:41 +0000] "PROPFIND /remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/ HTTP/1.0" 207 2180 "-" "OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10"
 172.24.0.1 - christian [31/Oct/2020:18:30:43 +0000] "PROPFIND /remote.php/dav/calendars/christian/personal/ HTTP/1.0" 207 2152 "-" "OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10"
 172.24.0.1 - christian [31/Oct/2020:18:30:43 +0000] "PROPFIND /remote.php/dav/calendars/christian/8600d5f7-b8c7-4b07-8b0a-79319efb50b1/ HTTP/1.0" 207 2174 "-" "OpenSync/1.5.0.3-ose (2017/04/18; dav4android; okhttp3) Android/10"
 172.24.0.1 - christian [31/Oct/2020:18:30:44 +0000] "PROPFIND /remote.php/dav/calendars/christian/personal/ HTTP/1.0" 207 2121 "-" "DAVx5/3.3.5-gplay (2020/10/24; dav4jvm; okhttp/4.9.0) Android/10"

Output of occ --help

www-data@e17e437ab78d:~/html$ ./occ --help
www-data@e17e437ab78d:~/html$ 
www-data@e17e437ab78d:~/html$ ./occ sd......gkmaSLKGALWKglaKNBVGLAJNBVG
www-data@e17e437ab78d:~/html$

and:
yes,

<?php phpinfo() ?>

works … so Apache + PHP are up and running …

rebuilding the docker containers does not help either

docker-compose stop
docker-compose pull
docker-compose build
docker-compose up -d

same error afterwards

just · November 6, 2020, 3:27pm

Hi.

Perhaps there are also errors in the nextcloud.log file you can find.
I haven’t tried using PHP 7.4x yet.
Is SQL running? Check status or try to re-start it.

systemctl status mariadb
journalctl -xe
Seems other people have experienced and fixed this 500 error in the past. Check out this post and others in the forum search.

bsafh · November 7, 2020, 10:09am

Well, it’s all docker, so systemctl on the host won’t help (and it’s not available inside the container)

But yes, the docker container for mariadb runs and mariadb is accessible and no errors in the log

mariadb doesn’t not seem to be the problem (as indicated in your link).

I’ve done multiple hours of search in the forum, but non of the solutions applied to my setup or if they were applicable, they did not solve the problem

php 7.4x itself isn’t the problem either, as I have a second instance (build from the same docker-compose definition !!) which runs fine using php 7.4.12

so this boils down to a nextcloud config error most probably (or a corrupt update, because the last thing a saw was the success message without errors from “./occ upgrade” command.

calling “./occ --help” directly afterwards from the same command line just returns the command line prompt without any error message or any other message and without any trace in any logfile.

bsafh · November 8, 2020, 4:35pm

Solution

set redis password, described in
https://help.nextcloud.com/t/solved-latest-docker-image-broke-the-installation-redis-password-auth/87598/2

docker-compose -f docker-compose.yml  build --pull
docker-compose -f docker-compose.yml  up -d

docker exec -it -u www-data <nextcloud-container> /bin/bash

./occ upgrade

throws error in “news” app:

Update app news from appstore
An unhandled exception has been thrown:
Error: Undefined class constant 'DEFAULT_SETTINGS' in /var/www/html/custom_apps/news/lib/Migration/MigrateConfig.php:49

try again
./occ upgrade

(works this time?? - well)

./occ maintenance:mode --off