Catchable Fatal Error

Every time I try to create a product, or do anything under the product tab, I get the following error message:

Catchable fatal error: Argument 1 passed to Jigoshop\Entity\Product::setTaxClasses() must be of the type array, null given, called in /home/bluesixstring/herohabit.com/wp-content/plugins/jigoshop-ecommerce/src/Jigoshop/Factory/Product.php on line 82 and defined in /home/bluesixstring/herohabit.com/wp-content/plugins/jigoshop-ecommerce/src/Jigoshop/Entity/Product.php on line 394