Unable to add users or change passwords when on different WIFI name?

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Some database connector problem in log.

longer
example
here

Nextcloud version (eg, 14.):?
Operating system and version (eg, Rasbian 9 ):
snap install

The issue you are facing:
unable to add users or change passwords the prompt for admin password comes and the passwd is not accepted.

Thanks

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

Steps to replicate it:

The output of your Nextcloud log in Admin > Logging:

PASTE HERE

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

PASTE HERE

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

PASTE HERE