Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\ac49048c0e1e4570f3d9a81db6c03812.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\ac49048c0e1e4570f3d9a81db6c03812.php on line 4