Thanks @cdamken ,
in desktop client I just override on local machine and I say replace the existing file and then I get the same error during desktop client syncs like I get through web ui:
Probleme ,Datei ,Ordner ,Größe ,Benutzerkonto ,Zeit ,Status ,
Der Server hat "500 Internal Server Error" auf "MOVE https://cloud-geli.de/remote.php/dav/uploads/XXXX/2491902491/.file" geantwortet (Call to a member function getId() on null),