Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\964271f2de553990143ce54dbefd10ca.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\964271f2de553990143ce54dbefd10ca.php on line 4