Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\4217ec6e1d550ebad977f0651026742c.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\4217ec6e1d550ebad977f0651026742c.php on line 4