Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, bool given in /var/www/itis/phpinclude/form/form.inc:1529 Stack trace: #0 /var/www/itis/servizi/form/modulo.php(539): Form->__construct() #1 {main} thrown in /var/www/itis/phpinclude/form/form.inc on line 1529