Hi there, @Smith.ai. Welcome to the Community! 
I’ve moved your post to the Troubleshooting category since it’s more related to errors occurring in a Zap rather than error with Zapier’s AI Actions API. This way, it’ll be easier for others running into that error in their Zaps to find.
I can see that you also reached out to our Support Team and they identified that the error is being caused by a bug. The team is working on a fix, but I can’t confirm when it will be resolved by. We’ll be in touch as soon as a fix is rolled out, and I’ll also follow up here with any updates or workarounds I come across in the meantime.
Let me know if there’s anything else I can help with!
Hey @Smith.ai, just circling back in here to confirm that the bug has been resolved! 
Really appreciate your patience while the team were working on getting this sorted. Since it’s been fixed we’ll be closing this topic out now but if you run into any further issues, feel free to start a new topic in the Community or reach out to our Support team directly for assistance.
In the meantime, happy Zapping! 