Fatal error: Uncaught Error: Call to undefined function app() in C:\xampp\htdocs\erp\storage\framework\views\139f088e72e11cc8417b52ae9e22165c.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\erp\storage\framework\views\139f088e72e11cc8417b52ae9e22165c.php on line 4