Twilio Integration Bug or Configuration Issue?

I recently got started with the Twilio integration and I’m trying to determine if some errors I’m seeing are my fault, or a bug in the actual integration. Right now I have a trial Twilio account, a phone number, and a webhook configured on that phone number for inbound messages. I’ve also set up the integration by adding the snippet below to my configuration.

  account_sid: MySID
  auth_token: !secret twilio_token

When I text my Twilio number, I see the event show up in Home Assistant under the twilio_data_received event type. However over in Twilio I see this error:

12300 Twilio is unable to process the Content-Type of the provided URL. Please see Twilio’s documentation on accepted content types for more information on valid Content-Types.

The debug log in Twilio looks something like this, note that the content type is application/octet-stream which is not listed as an accepted mime type.

Any clues on if this is a bug or a configuration issue of mine somewhere? And if the latter, any hints where I might be able to start looking?

I proposed a fix at https://github.com/home-assistant/core/pull/66561

Hi. Should this be working now? I am having exactly the same issue. Thanks.