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troubleshooting.md

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Troubleshooting

This is a brief list of possible errors. Keep in mind that other factors could cause these errors, but here is what to look for first.

Error codes

  • 400: Not using a phone number verified by Twilio. This could be an issue with the from_number parameter or the twilio_number parameter, but not the to_number parameter.
  • 401: Invalid account SID or auth token
  • undefined error: Blank account SID

Other errors

Call hangs up after caller answers Twilio call: The Twilio account is a trial account, and the to_number parameter is for a phone number that is not verified.

It may also be that the verified phone number does not match exactly. For example, 19876543210 was called instead of +19876543210 (that + makes a difference).