RangeError: Maximum call stack size exceeded #10202

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1. baiyf-git

   added

   bugSomething isn't workingSomething isn't working

   on Jan 23, 2026
2. github-actions

   assigned

   adamdotdevin

   on Jan 23, 2026
3. github-actions

   added

   webRelates to opencode on web / desktopRelates to opencode on web / desktop

   on Jan 23, 2026
4. github-actions commented on Jan 23, 2026

   

   github-actionsBot

   on Jan 23, 2026 – with GitHub Actions

   Contributor

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   This issue might be a duplicate of existing issues. Please check:

   • opencode web cant open RangeError: Maximum call stack size exceeded #10193: opencode web cant open RangeError: Maximum call stack size exceeded
   • RangeError: Maximum call stack size exceeded in Web UI during initialization #10194: RangeError: Maximum call stack size exceeded in Web UI during initialization
   • An error occurred when opening OpenCode in web mode. #10186: An error occurred when opening OpenCode in web mode
   • [Bug] Desktop: Blank UI after update to latest version #10188: [Bug] Desktop: Blank UI after update to latest version

   Feel free to ignore if none of these address your specific case.
5. ndtn-dev commented on Jan 23, 2026

   

   ndtn-dev

   on Jan 23, 2026

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   Debugging findings (with Claude AI assistance)

   I spent a while troubleshooting this with Claude Code and we found a potentially useful clue:

   https://opencode.ai/desktop-theme.json returns HTML instead of JSON

   $ curl -sI https://opencode.ai/desktop-theme.json | grep content-type
   content-type: text/html
   
   $ curl -s https://opencode.ai/desktop-theme.json | head -1
   <!DOCTYPE html><html lang="en">...

   Claude felt this was 60-70% likely to be the root cause, noting the endpoint is named .json but returns HTML.

   This would explain why:

   • All versions are affected (tested 1.1.16, 1.1.20, 1.1.32, 1.1.34 - same issue)
   • Downgrading doesn't help - the bug is server-side, not in the binary
   • Fresh installs fail - tested with clean volumes, no plugins, no config

   The frontend expects JSON from this endpoint but receives the website HTML, likely causing the parsing error that triggers the infinite React reconciliation loop.

   What we ruled out:

   • Cached/corrupted data (fresh Docker volumes)
   • Plugins (all disabled)
   • Reverse proxy issues (tested direct HTTP access)

   Environment tested:

   • Local host: opencode web (http://127.0.0.1:4096/)
   • OpenCode server mode (Docker, linux-arm64)
   • Direct HTTP access (no reverse proxy)
   • Multiple browsers (Chrome, Firefox, Safari iOS)

   Not 100% certain this is THE cause, but thought it was worth sharing since the endpoint being broken coincides with these bug reports appearing.
6. github-actions commented on Mar 26, 2026

   

   github-actionsBot

   on Mar 26, 2026 – with GitHub Actions

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   To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.
7. github-actions

   closed this as completedon Mar 26, 2026