is_file(): Passing null to parameter #1 ($filename) of type string is deprecated in modules/contrib/image_resize_filter/image_resize_filter.module

keshav.k → made their first commit to this issue’s fork.

#2 Patch fails to apply and it will also not work because It adds isset() method to check but the variable is already there so we need !empty instead.
I have created the MR please review it.

I have updated the PHP version to 8.1 and the module Image Resize Filter to version: 8.x-1.1, and i am able to reproduce the issue.
The changes in the patch attached don't apply. The MR attached in #6 🐛 is_file(): Passing null to parameter #1 ($filename) of type string is deprecated in modules/contrib/image_resize_filter/image_resize_filter.module Needs review changes seems to work fine.
Before →
After MR changes →

Adding a patch from the open MR to be used with composer...