I have contacted woo commerce but they havent gotten back

I have contacted woo commerce but they havent gotten back to me - any ideas about this issue:

http://the3doodler.staging.wpengine.com/blog/

The error is showing up across my entire website...

Warning: Missing argument 2 for SFN_Cart_Addons::the_title() in /nas/wp/www/staging/the3doodler/wp-content/plugins/woocommerce-cart-add-ons/woocommerce-cart-add-ons.php on line 461