Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\4340513bffcea9f840cdb9def1bf3b72.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\4340513bffcea9f840cdb9def1bf3b72.php on line 4