Linea21

See
https://stackoverflow.com/questions/74878889/php-warning-deprecated-creation-of-dynamic-property-is-deprecated
https://php.watch/versions/8.2/dynamic-properties-deprecated

Should be present in all classes when calling dispatcher !

see

public function __construct($a = array())
    {
        $this->dispatcher = $GLOBALS['dispatcher'];
        $this->params = $a;
    }