Warning: Undefined variable $app in /var/www/apache/dev/cal/web/app/controllers.php on line 13

Fatal error: Uncaught Error: Call to a member function get() on null in /var/www/apache/dev/cal/web/app/controllers.php:13 Stack trace: #0 {main} thrown in /var/www/apache/dev/cal/web/app/controllers.php on line 13