Fatal error: Uncaught Error: Call to undefined function app() in /var/www/html/xaviers-college-erpweb/vendor/barryvdh/laravel-debugbar/src/debugbar-routes.php:14 Stack trace: #0 {main} thrown in /var/www/html/xaviers-college-erpweb/vendor/barryvdh/laravel-debugbar/src/debugbar-routes.php on line 14