Fatal error: Uncaught Error: Class "Slim\Middleware" not found in /home/bimmertest/BookStack/vendor/itsgoingd/clockwork/Clockwork/Support/Slim/Old/ClockworkMiddleware.php:12 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/itsgoingd/clockwork/Clockwork/Support/Slim/Old/ClockworkMiddleware.php on line 12