Fatal error: Uncaught Error: Call to undefined function env() in C:\xampp\htdocs\hannoole\PMS\vendor\berkayk\onesignal-laravel\config\onesignal.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\PMS\vendor\berkayk\onesignal-laravel\config\onesignal.php on line 11