Fatal error: Uncaught Error: Class "Slim\Middleware" not found in C:\xampp\htdocs\vendor\itsgoingd\clockwork\Clockwork\Support\Slim\Old\ClockworkMiddleware.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\itsgoingd\clockwork\Clockwork\Support\Slim\Old\ClockworkMiddleware.php on line 11