Error interno del servidor

Hi. I had nextcloud working correctly and suddenly I cannot enter the web interface.

Can anybody help me?

Thanks in advance.

[/details]

Nextcloud version (eg, 12.0.2):17.0.0.0
Operating system and version (eg, Ubuntu 17.04):Ubuntu 18.04.3 LTS
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.29 (Ubuntu)
PHP version (eg, 7.1):PHP 7.2.24-0ubuntu0.18.04.1

The issue you are facing:

Error interno del servidor

El servidor no ha podido completar tu petición.

Si sucede de nuevo, por favor, envía los detalles técnicos a continuación al administrador del servidor.

Pueden verse más detalles en el registro del servidor.

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

The output of your Nextcloud log in Admin > Logging:

{"reqId":"0drsEyyl9nD48bxebzLB","level":3,"time":"November 09, 2019 14:55:15","remoteAddr":"192.168.0.100","user":"--","app":"index","method":"POST","url":"\/index.php\/login","message":{"Exception":"Exception","Message":"Argument 1 passed to OC\\Core\\Controller\\LoginController::tryLogin() must be of the type string, null given, called in \/var\/www\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php on line 170","Code":0,"Trace":[{"file":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/App.php","line":126,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OC\\Core\\Controller\\LoginController"},"tryLogin"]},{"file":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/Routing\/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OC\\Core\\Controller\\LoginController","tryLogin",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"core.login.tryLogin"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"_route":"core.login.tryLogin"}]},{"file":"\/var\/www\/nextcloud\/lib\/private\/Route\/Router.php","line":297,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"_route":"core.login.tryLogin"}]},{"file":"\/var\/www\/nextcloud\/lib\/base.php","line":1000,"function":"match","class":"OC\\Route\\Router","type":"->","args":["\/login"]},{"file":"\/var\/www\/nextcloud\/index.php","line":42,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php","Line":109,"Previous":{"Exception":"TypeError","Message":"Argument 1 passed to OC\\Core\\Controller\\LoginController::tryLogin() must be of the type string, null given, called in \/var\/www\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php on line 170","Code":0,"Trace":[{"file":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":170,"function":"tryLogin","class":"OC\\Core\\Controller\\LoginController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":99,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OC\\Core\\Controller\\LoginController"},"tryLogin"]},{"file":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/App.php","line":126,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OC\\Core\\Controller\\LoginController"},"tryLogin"]},{"file":"\/var\/www\/nextcloud\/lib\/private\/AppFramework\/Routing\/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OC\\Core\\Controller\\LoginController","tryLogin",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"core.login.tryLogin"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"_route":"core.login.tryLogin"}]},{"file":"\/var\/www\/nextcloud\/lib\/private\/Route\/Router.php","line":297,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"_route":"core.login.tryLogin"}]},{"file":"\/var\/www\/nextcloud\/lib\/base.php","line":1000,"function":"match","class":"OC\\Route\\Router","type":"->","args":["\/login"]},{"file":"\/var\/www\/nextcloud\/index.php","line":42,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"\/var\/www\/nextcloud\/core\/Controller\/LoginController.php","Line":278},"CustomMessage":"--"},"userAgent":"Mozilla\/5.0 (Macintosh; Intel Mac OS X 10.12; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"17.0.0.9"}
{"reqId":"0drsEyyl9nD48bxebzLB","level":3,"time":"November 09, 2019 14:55:15","remoteAddr":"192.168.0.100","user":"--","app":"PHP","method":"POST","url":"\/index.php\/login","message":"Unknown: POST Content-Length of 196 bytes exceeds the limit of 10 bytes at Unknown#0","userAgent":"Mozilla\/5.0 (Macintosh; Intel Mac OS X 10.12; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"17.0.0.9"}

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

<?php
$CONFIG = array (
"log_type" => "file",
"logfile" => "/var/log/nextcloud.log",
'logfilemode' => 0640,
"loglevel" => "0",
"logdateformat" => "F d, Y H:i:s",


  'instanceid' => 'ocdvx4fygsdq',
  'passwordsalt' => 'XXX',
  'secret' => 'XXX',
  'trusted_domains' =>
  array (
    0 => 'nextcloud',
    1 => 'mydomain.com',
    2 => '192.168.1.199',
  ),
  'datadirectory' => '/var/www/nextcloud/data',
  'dbtype' => 'mysql',
  'version' => '17.0.0.9',
  'overwrite.cli.url' => 'http://nextcloud',
  'dbname' => 'db_nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'user_nextcloud',
  'dbpassword' => 'XXXX',
  'installed' => true,
  'maintenance' => false,
  'mysql.utf8mb4' => true,
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'has_rebuilt_cache' => true,
);

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

│[Sat Nov 09 17:45:46.341098 2019] [authz_core:error] [pid 1408] [client 192.168.0.100:36708] AH01630: client denied by server configuration: /var/www/nextcloud/config │

is this problem still active?
I mean you’re still running NC17?

If yes: backup your files and start anew. That might be faster than ungrading version by version to NC24 (at least).

Further on: would you mind to translate all of that into english? Since this is the mutual language here on the forum. Otherwise you (or I, myself) could put it in subforum spanish?