Fatal error: Uncaught Error: Interface "OCP\Collaboration\Resources\IProviderManager" not found in /home/tzuovhm/tzuovhm/lib_/private/Collaboration/Resources/ProviderManager.php:17 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/lib_/private/Collaboration/Resources/ProviderManager.php on line 17