I have implemented the billing API tutorial, but after making test subscription to my demo app, I am receiving an error popup, which quickly closes:
TypeError: undefined is not an object (evaluating 'pages.includes')
In the browser console, I find this:
Unable to post message to https://nacrisdevstore.myshopify.com. Recipient has origin https://localhost:3000
Unhandled Promise Rejection: TypeError: undefined is not an object (evaluating 'pages.includes')
The email, though, is being sent to my mailbox.
I assume that our customers should not see this error, which is probably something that need fixing.