Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in C:\xampp\htdocs\systemlog\app\Http\Controllers\Api\V1\DeviceHeartbeatController.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\systemlog\app\Http\Controllers\Api\V1\DeviceHeartbeatController.php on line 13