Background run failed. Exception: (status code: 502) ollama._types.ResponseError: (status code: 502)

按照指导文档操作本地化部署的ollama，使用的deepseek-r1:8b模型，报错信息如下： 2025-05-07T08:28:10.103125Z [error ] Background run failed. Exception: (status code: 502) [langgraph_api.worker] api_variant=local_dev graph_id=ollama_deep_researcher run_attempt=1 run_created_at=2025-05-07T08:28:08.960402+00:00 run_ended_at=2025-05-07T08:28:10.103125+00:00 run_exec_ms=473 run_id=1f02b1d3-4dec-6242-93ce-ffec191c2a77 run_started_at=2025-05-07T08:28:09.629635+00:00 thread_name=asyncio_2 Traceback (most recent call last): File "C:\Users\a.conda\envs\deepResearch\Lib\site-packages\langgraph_api\worker.py", line 144, in worker await asyncio.wait_for(consume(stream, run_id), BG_JOB_TIMEOUT_SECS) File "C:\Users\a.conda\envs\deepResearch\Lib\asyncio\tasks.py", line 489, in wait_for return fut.result() ^^^^^^^^^^^^ File "C:\Users\a.conda\envs\deepResearch\Lib\site-packages\langgraph_api\stream.py", line 278, in consume raise e from g File "C:\Users\a.conda\envs\deepResearch\Lib\site-packages\langgraph_api\stream.py", line 267, in consume async for mode, payload in stream: File "C:\Users\a.conda\envs\deepResearch\Lib\site-packages\langgraph_api\stream.py", line 210, in astream_state event = await wait_if_not_done(anext(stream, sentinel), done) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a.conda\envs\deepResearch\Lib\site-packages\langgraph_api\asyncio.py", line 82, in wait_if_not_done raise e.exceptions[0] from None File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langgraph\pregel_init_.py", line 2740, in astream async for _ in runner.atick( File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langgraph\pregel\runner.py", line 392, in atick _panic_or_proceed( File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langgraph\pregel\runner.py", line 499, in _panic_or_proceed raise exc File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langgraph\pregel\retry.py", line 128, in arun_with_retry return await task.proc.ainvoke(task.input, config) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langgraph\\utils\runnable.py", line 672, in ainvoke input = await asyncio.create_task( ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langgraph\\utils\runnable.py", line 440, in ainvoke ret = await self.afunc(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_core\runnables\config.py", line 616, in run_in_executor return await asyncio.get_running_loop().run_in_executor( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a.conda\envs\deepResearch\Lib\concurrent\futures\thread.py", line 58, in run result = self.fn(*self.args, **self.kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_core\runnables\config.py", line 607, in wrapper return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "D:\Program\localDeepResearcher\local-deep-researcher./src/ollama_deep_researcher/graph.py", line 165, in summarize_sources result = llm.invoke( ^^^^^^^^^^^ File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_core\language_models\chat_models.py", line 369, in invoke self.generate_prompt( File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_core\language_models\chat_models.py", line 946, in generate_prompt return self.generate(prompt_messages, stop=stop, callbacks=callbacks, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_core\language_models\chat_models.py", line 765, in generate self._generate_with_cache( File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_core\language_models\chat_models.py", line 1000, in _generate_with_cache for chunk in self._stream(messages, stop=stop, **kwargs): File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_ollama\chat_models.py", line 777, in _stream for chunk in self._iterate_over_stream(messages, stop, **kwargs): File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_ollama\chat_models.py", line 737, in _iterate_over_stream for stream_resp in self._create_chat_stream(messages, stop, **kwargs): File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\langchain_ollama\chat_models.py", line 639, in _create_chat_stream yield from self._client.chat(**chat_params) File "C:\Users\a\AppData\Roaming\Python\Python311\site-packages\ollama_client.py", line 168, in inner raise ResponseError(e.response.text, e.response.status_code) from None ollama._types.ResponseError: (status code: 502) During task with name 'summarize_sources' and id '6dcca98d-9598-742a-fa37-6dd87d029543'