Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, null given in /var/www/html/generator/controllers/SampleController.php:38 Stack trace: #0 /var/www/html/generator/index.php(82): SampleController->route() #1 {main} thrown in /var/www/html/generator/controllers/SampleController.php on line 38