Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
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
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 25.0.3
Operating system and version (eg, Ubuntu 20.04): Debian GNU/Linux 11 (bullseye) aarch64
Apache or nginx version (eg, Apache 2.4.25): nginx/1.18.0
PHP version (eg, 7.4): 7.4.33
The issue you are facing:
Is this the first time you’ve seen this error? (Y/N): y
Steps to replicate it:
- Upgrade php from 7.4.33 to 8.1
- F*ck configs up and completely destroy the php install so you have only the option to switch back to 7.4.33
- Having no clue on what to do next because there are no errors
The output of your Nextcloud log in Admin > Logging:
Nextcloud is not online anymore
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 => 'next.cloooud.ml',
),
'datadirectory' => '/var/www/nextcloud/data',
'dbtype' => 'mysql',
'version' => '25.0.3.2',
'overwrite.cli.url' => 'https://next.cloooud.ml',
'dbname' => 'nx',
'dbhost' => 'localhost:3006',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => '****',
'dbpassword' => '****',
'installed' => true,
'default_phone_region' => 'DE',
'app_install_overwrite' =>
array (
0 => 'socialsharing_email',
1 => 'apporder',
2 => 'extract',
3 => 'files_markdown',
),
'mail_smtpmode' => 'smtp',
'mail_smtpsecure' => 'tls',
'mail_sendmailmode' => 'smtp',
'mail_from_address' => 'next',
'mail_domain' => 'cloooud.ml',
'mail_smtpauth' => 1,
'mail_smtpauthtype' => 'LOGIN',
'mail_smtphost' => 'mail.sageee.xyz',
'mail_smtpport' => '587 ',
'mail_smtpname' => '****',
'mail_smtppassword' => '****',
'memcache.local' => '\\OC\\Memcache\\Redis',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'maintenance' => false,
);
The output of your Apache/nginx/system log in /var/log/____:
https://bin.sageee.xyz/ironegesuv.yaml
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
There are none
Problem is I can’t switch back to 8.1 because I really f*cked up. I rm -r’ed the /etc/php/8.1 and can’t get the configs back because apt won’t create them anymore. I tried everything I could but I have no clue on what to do now and the Cloud was important for me lmao