MOVE not working on Apache

[RaHoni]

When I try to move a file I won't get folders shown to which I could move the file. I only get a Folder named / and can't open the Folder.
As I noticed after testing it with GitPod this is the same error as when the Server was down. But the Server does run in the background.

The server is using mod_webdav on Apache over SSL. Apache terminates the SSL connection it self.