I tried your stripe payments tutorial and got the following error:
StripePayment_JS.js:9 Uncaught TypeError: Cannot read property 'message' of undefined
There appears to be two issues here:
your error handler doesn't work correctly (doesn't like error.object.message).
the first issue would not have shown itself apart from the fact that there was an error:
The xhr.responseText is: {"code":"AE009","message":"Incorrect service configuration","status":"BAD_REQUEST"}