One of the merchants using one of our apps gets the following issue when the app loads on the storefront. I'm trying to wrap my head around what's going on:
Preliminary: enable our app
Actual result: An error screen is shown, customer can't continue with the checkout
Expected result: (when the app is not enabled) customer can checkout with this shipping address.
In the described scenario, when the app is enabled, it redirects the customer to '/checkout'.
Does anyone here have an idea what might go wrong here? I'm guessing that it has to shipping zones?