Fatal error: Uncaught TypeError: Argument 1 passed to MC4WP_Form_Listener::listen() must be an instance of MC4WP_Request, instance of MC4WP_Request given, called in /home/legoland/public_html/lego-land.nl/wp-content/plugins/mailchimp-for-wp/includes/forms/class-form-manager.php on line 92 and defined in /home/legoland/public_html/lego-land.nl/wp-content/plugins/mailchimp-for-wp/includes/forms/class-form-listener.php:27 Stack trace: #0 /home/legoland/public_html/lego-land.nl/wp-content/plugins/mailchimp-for-wp/includes/forms/class-form-manager.php(92): MC4WP_Form_Listener->listen(Object(MC4WP_Request)) #1 /home/legoland/public_html/lego-land.nl/wp-content/plugins/mailchimp-for-wp/includes/forms/class-form-manager.php(59): MC4WP_Form_Manager->init_form_listener() #2 /home/legoland/public_html/lego-land.nl/wp-includes/class-wp-hook.php(298): MC4WP_Form_Manager->initialize('') #3 /home/legoland/public_html/lego-land.nl/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array) #4 /home/legoland/public_html/lego-l in /home/legoland/public_html/lego-land.nl/wp-content/plugins/mailchimp-for-wp/includes/forms/class-form-listener.php on line 27