Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\df2f1cdd0f4355e233b57e8b9e87c966.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\df2f1cdd0f4355e233b57e8b9e87c966.php on line 4