Fatal error: Uncaught Error: Interface "OCP\Files\Template\ICustomTemplateProvider" not found in /home/tzuovhm/tzuovhm/apps_/richdocuments/lib/Template/CollaboraTemplateProvider.php:20 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/richdocuments/lib/Template/CollaboraTemplateProvider.php on line 20