Vapi is the Voice AI platform for developers.

Vapi AI

I get following error message 

See attached image
https://cdn.discordapp.com/attachments/1289575213431914506/1289575213859737670/image.png?ex=66f95202&is=66f80082&hm=bc6022cf32f70261bf45418c43f1417228fb5c263092626166332fc77a40687b&

<@1038914056192540735>
Please ask support for more info on this.

You can continue this conversation by mentioning me in the message.

temporary issue on vapi's end, i asked the same question

<@1038914056192540735> it will be fixed until then try using apis.

I just looked into the error myself out of curiosity, and see they added "transfer-update" to the default clientMessages in the webapp, but didn't update the update assistant API endpoint to support this yet. As a workaround, you can ensure the transfer-update client message checkbox is unticked in the webapp, as depicted in the attached image. You should then be able to continue development with the webapp unimpeded, until they resolve the issue on the backend.
https://cdn.discordapp.com/attachments/1289575213431914506/1289695621338628096/Image_1814x2092.png?ex=66f9c225&is=66f870a5&hm=bfa669953bbc7e4c58354df83c2c1d1aa749c13d68cd8546a7088dfc95eca2bb&