Unrecognized error number: 8192: trim(): Passing null to parameter #1 ($string) of type string is deprecated – Ubuntu

PHP 8.1 no longer supports passing null values to trim, prior to 8.1 those values would be turned into an empty string internally, with 8.1 they will no longer be changed.

If you have access to the code you should check if the value is null before being placed into trim or default the value to an empty string. You would need to fix those areas lsited in that error output manually.