Desktop app (Windows, v1.15.12): sidecar server exits on startup — "Unexpected server error", models/providers missing

[dadaddfadaf]

Description

Summary

On Windows, the desktop app launches but the local sidecar server fails right after startup. Every request returns "Unexpected server error. Check server logs for details." The project won't open, and the models/providers list is empty (I also can't add new ones).

Environment

• App version: 1.15.12 (packaged)
• OS: Windows
• Install type: official desktop build

Steps to reproduce

1. Launch the OpenCode desktop app.
2. App starts and reports "server ready".
3. UI fails to load sessions / bootstrap; models and providers are empty.

What I expected

The project opens normally and the configured models/providers are available.

What actually happens

• The sidecar server starts ("server ready") but then exits (sidecar exited { code: 0 }) a few seconds later.
• All requests fail with "Unexpected server error".
• Models/providers are missing and can't be added.

Troubleshooting already tried

• Fully quit + relaunch, ended leftover processes in Task Manager.
• Reset local data by renaming %AppData%\ai.opencode.desktop (a fresh tauri migration ran) — issue persists.
• Confirmed app is already on the latest version (1.15.12); no update available.

Logs

main.log
[17:02:49] app starting { version: '1.15.12', packaged: true }
[17:02:49] tauri migration: starting → complete
[17:02:49] spawning sidecar { url: 'http://127.0.0.1:51873/' }
[17:02:52] server ready { url: 'http://127.0.0.1:51873/' }

server.log
​
[17:02:50] [warn] (server) stderr {
message: '(node:23936) ExperimentalWarning: SQLite is an experimental feature and might change at any time'
}

renderer.log
​
[17:04:02] [error] Failed to load sessions Error: Unexpected server error. Check server logs for details.
[17:04:02] [error] Failed to finish bootstrap instance Error: Unexpected server error. Check server logs for details.

utility.log
​
[17:04:13] [warn] (utility) sidecar exited { code: 0 }

Note

The only server-side hint is an experimental SQLite warning, and the first failure is "Failed to load sessions" — this looks like the sidecar can't operate its SQLite database, which also explains the missing models/providers. Happy to provide the full server log from %AppData%\ai.opencode.desktop\logs\ if useful.

crash.log
main.log
network.log
renderer.log
server.log
utility.log

Plugins

No response

OpenCode version

Desktop

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

No response

[github-actions]

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

• Desktop app terminal blank with "Unexpected server error" on Windows #29089: Desktop app terminal blank with "Unexpected server error" on Windows — same symptom ("Unexpected server error", sidecar exits, SQLite experimental warning) on Windows desktop
• Sidecar crashes repeatedly on Windows (exit code 1 + ACCESS_VIOLATION) - v1.15.3/v1.15.4 #29599: Sidecar crashes repeatedly on Windows — same pattern of sidecar exiting on Windows with the same SQLite warning in server.log

If your issue is distinct from the above, please let a maintainer know.

[dadaddfadaf]

Thanks — this is related to #29089 and #29599, but I think it adds new signal worth keeping:

• Still reproduces on v1.15.12 (both linked issues are on older versions: 1.15.10 and 1.15.3/1.15.4).
• Different crash signature than Sidecar crashes repeatedly on Windows (exit code 1 + ACCESS_VIOLATION) - v1.15.3/v1.15.4 #29599: my sidecar exits cleanly with code: 0, not exit code 1 / ACCESS_VIOLATION.
• Broader symptom than Desktop app terminal blank with "Unexpected server error" on Windows #29089: it's not just a blank terminal panel — the whole project fails to open. Failed to load sessions and Failed to finish bootstrap instance both return "Unexpected server error", and the models/providers list is empty (I can't add new ones either).
• Likely the same root cause though: my earlier launch logs showed Failed to clone terminal in pty.log, which points back to the node-pty issue addressed in PR fix(desktop): bump @lydell/node-pty to 1.2.0-beta.12 #29803.

Question for maintainers: is the node-pty fix in #29803 expected to cover this? It still happens on v1.15.12 (released 2026-05-28), so I'm not sure that fix shipped in my build.

Resetting local data (renaming %AppData%\ai.opencode.desktop, fresh tauri migration) did not resolve it.

Happy to attach the full server log from %AppData%\ai.opencode.desktop\logs\ if helpful.

[rockeverm3m]

同样症状。v1.15.13 macOS 桌面版，plugin_origins 存在即崩（Failed to load sessions + Failed to bootstrap instance），已验证四次。另外 plugins/ 目录自动扫描也不工作。详细复现步骤见 #30081。