Fatal error: Uncaught Error: Class "Illuminate\Support\ServiceProvider" not found in /home/slsiluser/public_html/service-portal-mobile-responsive/vendor/laravel/passport/src/PassportServiceProvider.php:28 Stack trace: #0 {main} thrown in /home/slsiluser/public_html/service-portal-mobile-responsive/vendor/laravel/passport/src/PassportServiceProvider.php on line 28