Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /homepages/43/d838431116/htdocs/demo/index.php:29
Stack trace:
#0 /homepages/43/d838431116/htdocs/demo/index.php(29): in_array()
#1 {main}
thrown in /homepages/43/d838431116/htdocs/demo/index.php on line 29