Fatal error: Uncaught Error: Class 'OCP\AppFramework\App' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/wopi/lib/AppInfo/Application.php:20 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/wopi/lib/AppInfo/Application.php on line 20