General DiscussionI Internal Server Error : | requests.exceptions.HTTPError: 404 Client Error: Not Found for url: http://plugin_daemon:5002/plugin/fab91eda-78ff-4351-bc60-ff093d43c902/management/install/tasks?page=1&page_size=100

[binpanoutlook]

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I cloned the the code via the command: git clone [email protected]:langgenius/dify.git, and followed the document(https://github.com/langgenius/dify/blob/main/README.md) to start the Dify Server, but encounter an "Internal Server Error". The further details of the log are shown as below:
api-1 | 2025-09-05 03:32:20.980 ERROR [Dummy-20] [app.py:875] - Exception on /console/api/workspaces/current/plugin/tasks [GET]
api-1 | Traceback (most recent call last):
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 917, in full_dispatch_request
api-1 | rv = self.dispatch_request()
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 902, in dispatch_request
api-1 | return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) # type: ignore[no-any-return]
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask_restx/api.py", line 402, in wrapper
api-1 | resp = resource(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask/views.py", line 110, in view
api-1 | return current_app.ensure_sync(self.dispatch_request)(**kwargs) # type: ignore[no-any-return]
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask_restx/resource.py", line 41, in dispatch_request
api-1 | resp = meth(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/wraps.py", line 210, in decorated
api-1 | return view(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/libs/login.py", line 61, in decorated_view
api-1 | return current_app.ensure_sync(func)(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/wraps.py", line 32, in decorated
api-1 | return view(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/workspace/init.py", line 32, in decorated
api-1 | return view(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/workspace/plugin.py", line 322, in get
api-1 | {"tasks": PluginService.fetch_install_tasks(tenant_id, args["page"], args["page_size"])}
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/services/plugin/plugin_service.py", line 222, in fetch_install_tasks
api-1 | return manager.fetch_plugin_installation_tasks(tenant_id, page, page_size)
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/core/plugin/impl/plugin.py", line 120, in fetch_plugin_installation_tasks
api-1 | return self._request_with_plugin_daemon_response(
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/core/plugin/impl/base.py", line 145, in _request_with_plugin_daemon_response
api-1 | raise e
api-1 | File "/app/api/core/plugin/impl/base.py", line 141, in _request_with_plugin_daemon_response
api-1 | response.raise_for_status()
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/requests/models.py", line 1026, in raise_for_status
api-1 | raise HTTPError(http_error_msg, response=self)
api-1 | requests.exceptions.HTTPError: 404 Client Error: Not Found for url: http://plugin_daemon:5002/plugin/fab91eda-78ff-4351-bc60-ff093d43c902/management/install/tasks?page=1&page_size=100

[dosubot[bot]]

Hi @binpanoutlook! I'm Dosu and I’m helping the dify team.

The 404 error occurs because the endpoint /plugin/<plugin_id>/management/install/tasks does not exist in the open-source Dify codebase or the official plugins repository, so any request to it will always return "Not Found" see code analysis. The API service is correctly configured to use the PLUGIN_DAEMON_URL environment variable, but the backend route itself is missing see docker-compose config.

If you need this functionality, you may want to monitor the repository for future updates or check if there are any unpublished/private plugins or backend extensions that implement this endpoint. For now, this error is expected given the current public codebase.

To reply, just mention @dosu.

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[dosubot[bot]]

The nginx error happens because the config still tries to proxy requests to the plugin_daemon service, which you disabled. To fix this, open docker/nginx/conf.d/default.conf.template and comment out or remove the entire location /e/ { ... } block that contains proxy_pass http://plugin_daemon:5002; (reference). Then rebuild/restart your nginx container. This will let nginx start normally and your main Dify service will be accessible. The only side effect is that plugin management features will be unavailable, but all core Dify functionality will work as expected.

To reply, just mention @dosu.

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[binpanoutlook]

@dosu how to rebuild the nginx container?

[dosubot[bot]]

After you edit the nginx config, run these commands from your Dify project directory:

docker compose build nginx
docker compose up -d nginx

This will rebuild the nginx container with your changes and restart it. You can check the status with:

docker compose ps
docker compose logs nginx

If nginx still fails to start, double-check your config edits for typos or missing blocks.

To reply, just mention @dosu.

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[binpanoutlook]

@dosu new error from logs as below:
api-1 | requests.exceptions.HTTPError: 503 Server Error: Service Unavailable for url: http://10.237.138.97
api-1 | 2025-09-08 05:36:54.259 ERROR [Dummy-23] [app.py:875] - Exception on /console/api/workspaces/current/plugin/tasks [GET]
api-1 | Traceback (most recent call last):
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 917, in full_dispatch_request
api-1 | rv = self.dispatch_request()
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 902, in dispatch_request
api-1 | return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) # type: ignore[no-any-return]
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask_restx/api.py", line 402, in wrapper
api-1 | resp = resource(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask/views.py", line 110, in view
api-1 | return current_app.ensure_sync(self.dispatch_request)(**kwargs) # type: ignore[no-any-return]
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/flask_restx/resource.py", line 41, in dispatch_request
api-1 | resp = meth(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/wraps.py", line 210, in decorated
api-1 | return view(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/libs/login.py", line 61, in decorated_view
api-1 | return current_app.ensure_sync(func)(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/wraps.py", line 32, in decorated
api-1 | return view(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/workspace/init.py", line 32, in decorated
api-1 | return view(*args, **kwargs)
api-1 | ^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/controllers/console/workspace/plugin.py", line 322, in get
api-1 | {"tasks": PluginService.fetch_install_tasks(tenant_id, args["page"], args["page_size"])}
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/services/plugin/plugin_service.py", line 222, in fetch_install_tasks
api-1 | return manager.fetch_plugin_installation_tasks(tenant_id, page, page_size)
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/core/plugin/impl/plugin.py", line 120, in fetch_plugin_installation_tasks
api-1 | return self._request_with_plugin_daemon_response(
api-1 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api-1 | File "/app/api/core/plugin/impl/base.py", line 145, in _request_with_plugin_daemon_response
api-1 | raise e
api-1 | File "/app/api/core/plugin/impl/base.py", line 141, in _request_with_plugin_daemon_response
api-1 | response.raise_for_status()
api-1 | File "/app/api/.venv/lib/python3.12/site-packages/requests/models.py", line 1026, in raise_for_status
api-1 | raise HTTPError(http_error_msg, response=self)
api-1 | requests.exceptions.HTTPError: 503 Server Error: Service Unavailable for url: http://10.237.138.97

[dosubot[bot]]

The 503 error happens because Dify is still trying to call the plugin daemon for plugin management endpoints, even though you've disabled the service and removed the environment variable. There is no built-in feature flag or config to fully disable these backend calls—Dify relies on whether PLUGIN_DAEMON_URL is set, but if you access plugin management endpoints in the UI or API, the backend will still attempt the call and throw errors if the daemon isn't running or reachable (source).

To avoid these errors, make sure you don't visit plugin management pages in the UI or call related API endpoints. If you want a cleaner solution, you can patch the backend code to check if PLUGIN_DAEMON_URL is set before making any plugin daemon requests, and return an empty result or a friendly error if it's not. Right now, this is the only way to fully prevent these errors without running the plugin daemon (source).

Let me know if you want a code snippet for such a patch.

To reply, just mention @dosu.

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