Fatal error: Uncaught Error: Class "OCP\AppFramework\Db\Entity" not found in /home/tzuovhm/tzuovhm/apps_/richdocuments/lib/Db/Asset.php:21 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/richdocuments/lib/Db/Asset.php on line 21