🇫🇷France @byacoubi

with the patch it will work however between the version of drupal 10.3.0 and 10.3.1 there were quite a few changes to the files:
-state.php
-state.js
- ...

see the release note for 10.3.1 here
https://git.drupalcode.org/project/drupal/-/commit/8905837f693c4f0341dd9...

I agree with nod_ that you will have other problems later.

Hello,

For version 9.5.9 of Drupal with PHP 8.1.11 you must change line 35 in the file:modules/contrib/fileslog/src/Logger/FilesLog.php:

public function log($level, string|\Stringable $message, array $context = []): void

By this line:

public function log($level, $message, array $context = []) {