None ASCII characters file names

Here is a patch that solves the issue

What about putting a code comment before declaring the $filename_fallback?

Why not! here is an updated patch.

Instead of an MD5 hash, tet's transliterate the fallback filename.

@see \Drupal\Component\Transliteration\TransliterationInterface::transliterate

Good suggestion, here is a new patch with a transliterated fallback filename.

This looks great. Thanks.

Thanks, here is a PR

Automatically closed - issue fixed for 2 weeks with no activity.

Thank you for patch @Anas_maw .Work for me.