Fatal error: Uncaught Error: Interface "Sabre\DAV\IFile" not found in /home/tzuovhm/tzuovhm/apps/dav/lib/Upload/PartFile.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps/dav/lib/Upload/PartFile.php on line 18