Upload Media Browser Error "The web server does not have the necessary permissions to edit the directory"

1

The following error message appears when uploading files or images via the media browser:

The web server does not have the necessary permissions to edit the directory

sjr-upload
sjr-upload755×557 75.3 KB

However, the file will be uploaded.

How can I resolve the error message?

ModX 2.8.7
PHP 8.2.13
CHMOD: 0755
GD version: bundled (2.1.0 compatible)

2

Does the error message only occur if there are umlauts (äöü) in the file name?
I believe this error is shown when MODX tries to rename the file.

3

Many thanks for the tip.
I have found the solution:
The FileSluggy extra did not work with the current PHP version.