I tried updating to 1.2.3 and was getting a 500 error on any page that is using webp fallback images:
TypeError: array_filter(): Argument #1 ($array) must be of type array, null given in array_filter() (line 153 of /code/web/modules/contrib/wpf/src/ImageFactory.php).
Which refers to this line of code in /wpf/src/ImageFactory.php:
$this->disabledStyles = array_filter($settings->get('styles.disabled'));
To get things working, I simply had to go to the WPF config page (/admin/config/media/wpf) and save it.
As far as a an actual fix to the module code, I assume the code just needs to check if $settings->get('styles.disabled') is empty and if so, set it to an empty array so null isn't getting passed to the array_filter function.
My site is running on PHP 8.3.
Needs work
1.2
Code
Patch works great. Tested it on an environment where I had already saved the config page and one where I had not yet saved the config page.
I have also encountered this error - patch #3 fixes the problem.