Fatal error: Uncaught Error: Call to undefined function env() in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/laravel/nexmo-notification-channel/config/vonage.php:16 Stack trace: #0 {main} thrown in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/laravel/nexmo-notification-channel/config/vonage.php on line 16