FATAL ERROR PLEASE HELP!!!

Hi I updated my eShop plugin, and now I’m getting this error for my entire store!

Fatal error: Cannot use string offset as an array in /home/content/04/4583404/html/wp-content/plugins/eshop/eshop-add-cart.php on line 157

Whenever I click on the “Store” link from my website, all that comes up is the above error! I found some other threads similar to this but nothing has worked! Someone please help!!