Fatal error: Uncaught Error: Interface 'OCP\Activity\IExtension' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/ransomware_protection/lib/Activity.php:21 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/ransomware_protection/lib/Activity.php on line 21