CS Mega Menu Block in GoMarket Theme for Prestashop - Unable to add products to through options


I am using GoMarket Theme for Prestashop.
There is an issue with the CS Mega Menu Block, it does not add products to the mega menu.
When typing the product name in the “Choose product” field, a weired script says “undefined id name” pops up and the product does not get saved. I am afraid it is an issue related to an error in the codes or compatibility with the rest of other files. I attached an image for your review.


your help is highly appreciated!