Fatal error: Uncaught Error: Class 'OCP\AppFramework\Controller' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/files_external_dropbox/lib/Controller/OauthController.php:36 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/files_external_dropbox/lib/Controller/OauthController.php on line 36