Error: Unhandled exception: match err handler threw

[APZelos]

Trying to ask a question via the cli throws Error: Unhandled exception: match err handler threw

Output when I run btca:

❯ btca
{"ts":"2026-01-31T12:44:09.200Z","level":"info","event":"server.starting","requestId":"unknown","port":5953}
{"ts":"2026-01-31T12:44:09.200Z","level":"info","event":"config.load.start","requestId":"unknown","cwd":"/Users/alkis/Developer/apzelos/concave"}
{"ts":"2026-01-31T12:44:09.200Z","level":"info","event":"config.load.global","requestId":"unknown","source":"existing","path":"/Users/alkis/.config/btca/btca.config.jsonc"}
{"ts":"2026-01-31T12:44:09.202Z","level":"info","event":"config.load.project","requestId":"unknown","source":"project","path":"/Users/alkis/Developer/apzelos/concave/btca.config.jsonc"}
{"ts":"2026-01-31T12:44:09.207Z","level":"info","event":"config.load.merged","requestId":"unknown","globalResources":3,"projectResources":10}
{"ts":"2026-01-31T12:44:09.207Z","level":"info","event":"config.ready","requestId":"unknown","provider":"opencode","model":"openai/gpt-5.2-codex","resources":["svelte","tailwindcss","nextjs","effect","convex","convexHelpers","convexTest","effectVitest","typescript","vite","vitest","turborepo","tsup"],"resourcesDirectory":"/Users/alkis/.local/share/btca/resources"}
{"ts":"2026-01-31T12:44:09.209Z","level":"info","event":"server.started","requestId":"unknown","port":5953}

Screenshots

Other info

Macbook Pro 16 M3 Max
Ghostty v1.2.3
Bun v1.3.8
btca v1.0.71

[deadcoder0904]

I can confirm this error, I get this too. And now another error where I just see no response after loading:

[Minoo7]

+1, I get this all the time

[safepre]

@Minoo7 @APZelos @deadcoder0904

#159 mentions that simply edit your config file and check the repos branch, I got mine working

[ramarivera]

btca repro data you can paste into a bug report:
btca_listResources -> succeeds, includes opencode
btca_ask(question="What is codex-cli?", resources=["openai-codex"]) -> succeeds
btca_ask(question="Where is BunInstallFailedError defined?", resources=["opencode"]) -> fails with:
{"error":"{\"error\":\"match err handler threw\",\"tag\":\"Panic\"}"}
Fresh resources created:
opencode-debug (with searchPath: packages/opencode/src)
opencode-root-debug (no searchPath)
Both also fail with the same panic on btca_ask

[deadcoder0904]

Thanks @safepre it worked. Nvm, it didn't. I tried this tool many times but it just doesn't work. Too buggy. Will use ghorge.

[stickerdaniel]

You need to set the branch for repos where it's not main.

[stickerdaniel]

You can add to your AGENTS.md

When adding a new resource, verify the repo's default branch (`gh api repos/OWNER/REPO --jq '.default_branch'`). btca assumes `main` and fails silently on repos using `master`, `dev`, etc. Always set the `branch` field explicitly.