Fatal error: Uncaught Error: Interface 'OCP\Migration\ISchemaMigration' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/activity/appinfo/Migrations/Version20170724182159.php:13 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/activity/appinfo/Migrations/Version20170724182159.php on line 13