Call_user_func error

Hi,

I get this error very often:
call_user_func() expects parameter 1 to be a valid callback, class ‘OCA\QuotaWarning\AppInfo\Application’ does not have a method ‘login’ at /var/www/nextcloud/lib/private/legacy/hook.php#106

PHP is version 7, Nextcloud is 12.

Any idea what this is?

We have the same error every time you log in, the error is shown in the log

Hello,

How to resolve this incident, please?