Amazon Q is having trouble responding right now:

Hi,

We are also experiencing this issue. 1/4 of the request are giving out errors in VSCode. I don't see any indication in the Health Dashboard about this problem, making it hard to followup the resolution. Can you please update the Health Dashboard?

This error appears to be related to connectivity issues with Amazon Q. When Amazon Q can't establish the required network connections, it can result in errors like the one you're experiencing.

Amazon Q uses WebSocket technology over port 8443 to maintain secure communication with its endpoints. For the web experience to function properly, port 8443 must be open and accessible on your network.

Here are some troubleshooting steps you can try:

1. Check if port accessibility is causing the issue by testing the connection.
2. If you're using a VPN or firewall, try testing with it turned on and off to see if that's affecting the connection.
3. Run the q doctor command in your terminal to diagnose common issues with your Amazon Q installation.
4. Ensure you're properly authenticated by running q login if needed.
5. Try breaking down your prompts into smaller, less complex inputs. Sometimes Amazon Q has trouble processing very complex or lengthy requests.

If these steps don't resolve the issue, you might want to report the problem using the q issue command in your terminal.
Sources
Troubleshoot server stopped responding error in Amazon Q Business | AWS re:Post
Unable to configure Amazon Q on Mac - DOA? | AWS re:Post
Amazon Q - I'm sorry, I am unable to respond further. Perhaps we could find another topic to discuss? | AWS re:Post

The AWS team is aware of the 'An unexpected error occurred, please retry' message that some users are experiencing due to high demand following recent Kiro launch - while the team works on stabilizing the service and provisioning additional capacity, you can try waiting a moment and retrying your request, or alternatively switch to using the Claude Sonnet 3.5 model since the 3.5 model is not used with Kiro (note that this issue may temporarily affect the Amazon Q plugin, Q CLI and other Q-powered tools as they share the same backend).