Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\adminlte3\storage\framework\views\562017350ea68f21d6603ea92bff2d0b239a637e.php:1 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\storage\framework\views\562017350ea68f21d6603ea92bff2d0b239a637e.php on line 1