Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/bitacora/public_html/mtdn/app/Http/Controllers/Periodos_lectivoController.php:16 Stack trace: #0 {main} thrown in /home/bitacora/public_html/mtdn/app/Http/Controllers/Periodos_lectivoController.php on line 16