Fatal error: Uncaught Error: Class 'App\Http\Controllers\Controller' not found in /home/xploreph/billing.xplorephp.com/app/Http/Controllers/ClientInvoiceController.php:13 Stack trace: #0 {main} thrown in /home/xploreph/billing.xplorephp.com/app/Http/Controllers/ClientInvoiceController.php on line 13