Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\c7fdd2183c5a1e97b810d5b43d74380b.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\c7fdd2183c5a1e97b810d5b43d74380b.php on line 4