Fatal error: Uncaught Error: Class 'OCA\DAV\DAV\AbstractCustomPropertiesBackend' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/dav/lib/DAV/FileCustomPropertiesBackend.php:40 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/dav/lib/DAV/FileCustomPropertiesBackend.php on line 40