Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\d9b7a28efb0e924692675524beb68ee2.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\d9b7a28efb0e924692675524beb68ee2.php on line 4