Fatal error: Uncaught Error: Call to a member function get_control_step() on null in /home/customer/www/kikplatform.nl/public_html/wp-content/plugins/cartflows/modules/checkout/classes/class-cartflows-checkout-markup.php:462 Stack trace: #0 /home/customer/www/kikplatform.nl/public_html/wp-includes/class-wp-hook.php(292): Cartflows_Checkout_Markup->preconfigured_cart_data(Object(WP)) #1 /home/customer/www/kikplatform.nl/public_html/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #2 /home/customer/www/kikplatform.nl/public_html/wp-includes/plugin.php(551): WP_Hook->do_action(Array) #3 /home/customer/www/kikplatform.nl/public_html/wp-includes/class-wp.php(763): do_action_ref_array('wp', Array) #4 /home/customer/www/kikplatform.nl/public_html/wp-includes/functions.php(1291): WP->main('') #5 /home/customer/www/kikplatform.nl/public_html/wp-blog-header.php(16): wp() #6 /home/customer/www/kikplatform.nl/public_html/index.php(17): require('/home/customer/...') #7 {main} thrown in /home/customer/www/kikplatform.nl/public_html/wp-content/plugins/cartflows/modules/checkout/classes/class-cartflows-checkout-markup.php on line 462