Fatal error: Uncaught Error: Class "OCP\AppFramework\Middleware" not found in /home/tzuovhm/tzuovhm/apps/files_sharing/lib/Middleware/ShareInfoMiddleware.php:17 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps/files_sharing/lib/Middleware/ShareInfoMiddleware.php on line 17