Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\bf2d51d8a8644368b6f4657cf4079ce1.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\bf2d51d8a8644368b6f4657cf4079ce1.php on line 4