Fatal error: Uncaught Error: Call to undefined function env() in /opt/lampp/htdocs/myhospitalnow/propreshnow_nurses/bookings_nurses/vendor/laravel/framework/config/concurrency.php:18 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/propreshnow_nurses/bookings_nurses/vendor/laravel/framework/config/concurrency.php on line 18