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Sorry to hear you’re facing problems 
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Nextcloud version: 22.0.0
Operating system and version: Ubuntu 20.04
Apache or nginx version (eg, Apache 2.4.25): 2.4.41
PHP version : PHP 8.0.8
The issue you are facing:
After i made a fresh installalltion and moved my Data and Databases to the new vServer i receive a “Internal Server Error” after klicking on the Tab “Settings → External Storages”.
I tried to wipe the external “oc_storages_credentials” Table but after that the whole Cloud gave me a internal Server Error.
Is this the first time you’ve seen this error?: Yes
Steps to replicate it:
- Install a fresh vServer with a LAMP Stack
- Move the Data and Database to the new System
The output of your Nextcloud log in Admin > Logging:
Error index Exception: HMAC does not match.
Error PHP Error: disk_free_space(): No such file or directory at /var/www/daten/lib/private/Files/Storage/Local.php#381
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
Nothing special inside
The output of your Apache/nginx/system log in /var/log/____:
Got error 'Primary script unknown'