Javascricpt error showing Product Page - 2-1-stable

[coorasse]

When you load a product page, $("#cart-form form").validate();

it raises a Object [object Object] has no method 'validate'.

Missing library?

[radar]

This should automatically be added by jQuery.validate, which should be required by Spree's frontend libraries. Could you please provide us steps to reproduce this issue as per https://github.com/spree/spree/tree/master/CONTRIBUTING.md?