Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/demohost/hospital.demohost.in/app/Http/Controllers/Patient/OpdPatientDepartmentController.php:13 Stack trace: #0 {main} thrown in /home/demohost/hospital.demohost.in/app/Http/Controllers/Patient/OpdPatientDepartmentController.php on line 13