Error: I couldn’t make the changes you requested due to a technical issue on our side"

Thanks for reaching out @Chris_Deane.

I took a look at the Wix Vibe documentation and I feel this is best reported as an issue if you are sending your request and the service isn’t completed.

The best place to report an issue is via the steps outlined in this topic and I would include the screenshot you shared here with them and if possible, the code tab. They’ll ask if they need anything else to help find the issue via email.