[BUG] Artifacts page won't load. Shows "Page not found"

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When i go to my artifacts tab i get a Page not found error. I have tried this in the desktop app, on the web and incognito mode. All of them do the same thing.

I am able to open an artifact if it existed in a project, but I do not see any of my artifacts in my artifact tab. I have attach

<img width="1139" height="775" alt="Image" src="https://github.com/user-attachments/assets/ea5aba49-3236-47db-91d3-b0e77a10dcf0" />

ed a screenshot

What Should Happen?

I should be able to see all of my artifacts. It worked fine yesterday and all settings are correct.

Error Messages/Logs

Steps to Reproduce

1. Go to chat
2. Click on artifacts
3. Click on your artifacts
4. Page not found

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.1.9669

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_