Help: Stream request to Plugin Daemon Service failed！

[simonjhy]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I found some exceptions in docker api logs. I am not sure what's plugin cause this error. Can someone help to identify the rootcause?

2025-12-06 11:43:36.418 ERROR [GraphWorker-1] [base.py:156] - Stream request to Plugin Daemon Service failed
Traceback (most recent call last):
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_transports/default.py", line 72, in map_httpcore_exceptions
yield
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_transports/default.py", line 236, in handle_request
resp = self._pool.handle_request(req)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/connection_pool.py", line 256, in handle_request
raise exc from None
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/connection_pool.py", line 236, in handle_request
response = connection.handle_request(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/connection.py", line 103, in handle_request
return self._connection.handle_request(request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/http11.py", line 136, in handle_request
raise exc
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/http11.py", line 106, in handle_request
) = self._receive_response_headers(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/http11.py", line 177, in _receive_response_headers
event = self._receive_event(timeout=timeout)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_sync/http11.py", line 217, in _receive_event
data = self._network_stream.read(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_backends/sync.py", line 126, in read
with map_exceptions(exc_map):
^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/contextlib.py", line 158, in exit
self.gen.throw(value)
File "/app/api/.venv/lib/python3.12/site-packages/httpcore/_exceptions.py", line 14, in map_exceptions
raise to_exc(exc) from exc
httpcore.ReadTimeout: timed out

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/app/api/core/plugin/impl/base.py", line 145, in _stream_request
with httpx.stream(**stream_kwargs) as response:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/contextlib.py", line 137, in enter
return next(self.gen)
^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_api.py", line 172, in stream
with client.stream(
^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/contextlib.py", line 137, in enter
return next(self.gen)
^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_client.py", line 880, in stream
response = self.send(
^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_client.py", line 926, in send
response = self._send_handling_auth(
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_client.py", line 954, in _send_handling_auth
response = self._send_handling_redirects(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_client.py", line 991, in _send_handling_redirects
response = self._send_single_request(request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_client.py", line 1027, in _send_single_request
response = transport.handle_request(request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_transports/default.py", line 235, in handle_request
with map_httpcore_exceptions():
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/contextlib.py", line 158, in exit
self.gen.throw(value)
File "/app/api/.venv/lib/python3.12/site-packages/httpx/_transports/default.py", line 89, in map_httpcore_exceptions
raise mapped_exc(message) from exc
httpx.ReadTimeout: timed out

2. Additional context or comments

No response

[dosubot[bot]]

The error is usually caused by plugin daemon service timeouts, network/DNS issues, or backend outages. The timeout for plugin requests is controlled by the PLUGIN_DAEMON_TIMEOUT environment variable (default: 300 seconds). For long-running plugin tasks, increase this value in your .env or docker-compose.yaml (e.g., PLUGIN_DAEMON_TIMEOUT=1200) and restart your containers. Also check PLUGIN_MAX_EXECUTION_TIMEOUT, reverse proxy (nginx/traefik) timeouts, and ensure all containers are healthy, on the same Docker network, and using matching API keys. If the error persists, review plugin_daemon, api, and worker logs with docker-compose logs and enable debug logging (ENABLE_REQUEST_LOGGING=True, LOG_LEVEL=DEBUG in .env) to pinpoint which plugin or request is timing out. Issues can also be caused by corrupted plugin packages, dependency installation failures, or DNS/network misconfigurations. More details: discussion, code reference, docker-compose config.

To reply, just mention @dosu.

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[simonjhy]

But I did not find this PLUGIN_DAEMON_TIMEOUT in .env file.
it throws E486: Pattern not found: PLUGIN_DAEMON_TIMEOUT

[dosubot[bot]]

PLUGIN_DAEMON_TIMEOUT is a supported environment variable in Dify, but it isn't included in the .env file by default. Dify uses a default value of 300 seconds for this timeout if you don't set it yourself. To override it, just add a line like PLUGIN_DAEMON_TIMEOUT=1200 to your .env file (or to the environment section of your docker-compose.yaml), then restart your containers for the change to take effect. This approach works for other similar environment variables that aren't pre-listed in .env as well. For more details, see the code reference and related discussion: code reference, discussion.

To reply, just mention @dosu.

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