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31007: Twilio Client: Voice JavaScript SDK version not supported



ERROR: 31007

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PROGRAMMABLE VOICE
ERROR

Twilio Voice JavaScript SDK 1.x is deprecated. Expect intermittent disruptions to applications running Voice JavaScript SDK 1.x until the final shutdown September 10, 2025. Upgrade your application as soon as possible to avoid further disruptions.

Possible Causes

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  • You are using Voice JavaScript SDK version 1.x in your application
  • You are using Twilio Flex UI version 1.x in your contact center