I can't upload images with CkEditor 5 in my Drupal 10.1.6 website (which runs on PHP 8.2); all the other features work fine.
In my recent upgrade of Drupal, I switched directly from Drupal 9.4 to Drupal 10.1.6. I followed Upgrading to CKEditor 5.
I've seen ckeditor5 upload image MethodNotAllowedException where they talk about this problem. Spokje's comment says that issue is a duplicate of AccessAwareRouter does not respect HTTP method which has been already fixed on September 18, 2023. So normally the issue should not re-appear, shouldn't it?
I also already seen Why is MethodNotAllowedException thrown when an image is uploaded with CKEditor 5? but I can't find the user settings where I could change the language to default. In my website, we don't use this field on user. We just have first name, last name, email, password, and state.
I've enabled Account administration pages on /admin/config/regional/language/detection (Detection and selection).
In my admin profile, I can just update my mail or the password.
I can't find where the problem is. I have the Editor Advanced Link module installed, but that is compatible with Drupal 10 and CkEditor 5. (I've tested it.)
Can you help me please? I do not see errors in the Drupal log.