I'm trying to build text messaging App as explained here (https://www.youtube.com/watch?v=7L3OH...).
I followed the steps and all worked fine up to using 'Test' to test my service where I could send myself an SMS successfully as shown below:
After this, I generated the response automatically, and then I invoked the service on 'Send Message' Button click.
However, when I tested the App in the browser and in the Appery tester, it returned the error below:
For its worth, in your tutorial, it did not explain how it created the proxy. It was already in the proxy list. For me, I just created one from 'New Channel' Button and typed in 'TwilioProxy'. Would that be the reason?
Many thanks for help!