Fatal error: Uncaught Error: Call to undefined function env() in /home/demohost/hospital.demohost.in/vendor/spatie/laravel-google-calendar/config/google-calendar.php:5 Stack trace: #0 {main} thrown in /home/demohost/hospital.demohost.in/vendor/spatie/laravel-google-calendar/config/google-calendar.php on line 5