bytedance/deer-flow · error · HTTPException

Failed to start {display_name} channel. Check the values and

Error message

Failed to start {display_name} channel. Check the values and try again.

What it means

Error "Failed to start {display_name} channel. Check the values and try again." thrown in bytedance/deer-flow.

Source

Thrown at backend/app/gateway/routers/channel_connections.py:689

    runtime_config["enabled"] = True

    for key in _RUNTIME_REQUIREMENTS[provider]:
        runtime_config[key] = values[key]

    if provider == "telegram":
        # The deep-link username is persisted with the runtime channel config
        # (set_provider_config below) and applied to future requests via
        # apply_runtime_connection_config; never mutate the config instance
        # cached by get_app_config().
        runtime_config["bot_username"] = values["bot_username"]

    candidate_channels_config = dict(channels_config)
    candidate_channels_config[provider] = runtime_config

    started = await _restart_runtime_channel_if_available(provider, runtime_config)
    if started is False:
        display_name = _PROVIDER_META[provider]["display_name"]
        raise HTTPException(status_code=400, detail=f"Failed to start {display_name} channel. Check the values and try again.")

    store = await _get_runtime_config_store(request)
    await asyncio.to_thread(store.set_provider_config, provider, runtime_config)

    # Re-read the live cached config and apply only this provider's change so a
    # concurrent mutation for a different provider is not clobbered. No await
    # may occur between this read and the reassignment.
    live_channels_config = await _get_channels_config(request)
    live_channels_config[provider] = runtime_config
    request.app.state.channels_config = live_channels_config

    return _provider_response(config, live_channels_config, provider, _PROVIDER_META[provider])

View on GitHub (pinned to 1dd6ba1acb)

Solutions

  1. Verify the channel credential values (tokens, secrets, URLs) are correct and complete, then retry.
  2. Check the Gateway logs for the underlying start failure from the provider SDK.

When it happens

Trigger: Thrown at backend/app/gateway/routers/channel_connections.py:689 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of bytedance/deer-flow@1dd6ba1acb (2026-08-14). Data as JSON: /api/errors/ea4f8e3139c46789. Report an issue: GitHub.