Typo3 - Folder "/" does not exist - Error

Question

I have a problem in Typo3. When I am in the backend in the filelist menu or want to link something, I get the error message: "#1314516810: Folder "/" does not exist." (see screenshot).

The folder exists of course, and everything worked until recently, the error suddenly appeared from one day to the next. I have already googled the error and searched several forums, but I cannot find a solution to my problem.

Does anyone have an idea what the problem is and how I can fix it? Thank you very much in advance.

Typo3-Version 8.7.32
Webserver: Apache
PHP-Version: 7.4.28
Database: MariaDB 10.3.34
OS: Ubuntu 20.04.4 LTS
Server Management via Plesk Obsidian 18.0.43

Regards

Answer 1

Did you check the folder permissions? It should be 755 or maybe 775 and your webserver user should be the owner. Or in case of 775 the webserver user should be in the usergroup that has access rights to this folder.

Answer 2

Are you using the extension fal_securedownload?

If yes, and you are using a subfolder name under fileadmin with more than 30 characters, shorten this subfolder name, like stated here:

https://github.com/beechit/fal_securedownload/issues/137