Suppress Warning 'Your Storage is almost full'

Nextcloud version (eg, 20.0.5): 22.1.1
Operating system and version (eg, Ubuntu 20.04): Debian 11
Apache or nginx version (eg, Apache 2.4.25): nginx 1.18.0
PHP version (eg, 7.4): PHP 8.0.10
The issue you are facing:

I get warnings about my storage

“Your storage is almost full ({usedSpacePercent}%).”

and would like to get rid of them. How can this be done ?

I am no PHP guy and did not find where this warning is risen.

Thanks for your time