Nextcloud version (eg, 20.0.5): r27.1.2
Operating system and version (eg, Ubuntu 20.04): Debian 12
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.57
PHP version (eg, 7.4): 8.1.25
The issue you are facing:
Since one week I’ve upgraded my home server from debian 11 to debian 12 and since then, i can’t access anymore my NC instance. I have that “internal server error” page instead of my login page.
i’ve look at all logs (nextcloud, apache errors, php,) but nothing relevant is in these logs. i really don’t konw where to start looking for right now. I have important things on my NC so i hope i won’t loose them (i have backup anyway)
I’m using postgresql as nextcloud DB.
So if you have any tips where i can find some clues, it would be nice 
Thanks a lot
Is this the first time you’ve seen this error? (Y/N): Y
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 => '192.168.1.2',
1 => 'debian-serveur-matt.lan',
),
'datadirectory' => '/home/nextcloud/',
'dbtype' => 'pgsql',
'version' => '27.1.2.1',
'overwrite.cli.url' => 'http://192.168.1.2/nextcloud',
'dbname' => 'nextcloud',
'dbhost' => '192.168.1.2:5432',
'dbport' => '',
'dbtableprefix' => 'oc_',
'dbuser' => '*****',
'dbpassword' => '*****',
'installed' => true,
'default_phone_region' => 'FR',
'maintenance' => false,
'theme' => '',
'loglevel' => 0,
'memories.exiftool' => '/var/www/html/nextcloud/apps/memories/exiftool-bin/exiftool-amd64-glibc',
'memories.vod.path' => '/var/www/html/nextcloud/apps/memories/exiftool-bin/go-vod-amd64',
'memcache.local' => '\\OC\\Memcache\\Redis',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => '/var/run/redis/redis-server.sock',
'port' => 0,
'timeout' => 0.0,
),
);