Error Connecting to Twilio

Hello, I am getting the following error in the logs: 'Error connecting to Twilio'. I am running Ignition v8.1.20. This is a new connection and I am not sure what the next steps are. Below is a the first line from the error, and a screenshot of the log is below. Any ideas what the next steps are?

com.twilio.exception.ApiException: Unexpected character ('<' (code 60)): expected a valid value (JSON String, Number, Array, Object or token 'null', 'true' or 'false') at [Source: (ByteArrayInputStream); line: 1, column: 2]

Educated guess: The Twilio module is trying to make a connection to Twilio's servers (in the cloud) and we're getting an HTML/404 page (the unexpected character < is probably the first character in an <html> tag).

It looks like although the Twilio module in 8.1.20 is using a very old version of the Twilio SDK, it's still calling the correct version of the REST API. That means either:

  1. Something is incorrect in your credentials
  2. Something is interfering in your network calls between the Ignition gateway and Twilio's cloud service, such as an IT/"security" agent acting as a man-in-the-middle.