Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Validation\Rule" not found in /home/uconline/public_html/pruebas.uconline.mx/app/Rules/InstitucionalEmail.php:7 Stack trace: #0 {main} thrown in /home/uconline/public_html/pruebas.uconline.mx/app/Rules/InstitucionalEmail.php on line 7