Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\7da7718053e523f38fe08ea293716ee2.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\7da7718053e523f38fe08ea293716ee2.php on line 4