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langchain_core.exceptions.OutputParserException when running the steamilt app #7

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opened 2026-02-16 00:15:02 -05:00 by yindo · 1 comment
yindo commented 2026-02-16 00:15:02 -05:00
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Originally created by @Mazzesy on GitHub (Apr 16, 2024).

When trying out the web_explorer, I get the error below. I have the relevant keys. Did anyone face the same issue?

Traceback (most recent call last):
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/pydantic/v1/main.py", line 522, in parse_obj
obj = dict(obj)
TypeError: 'int' object is not iterable

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

Traceback (most recent call last):
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/output_parsers/pydantic.py", line 25, in parse_result
return self.pydantic_object.parse_obj(json_object)
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/pydantic/v1/main.py", line 525, in parse_obj
raise ValidationError([ErrorWrapper(exc, loc=ROOT_KEY)], cls) from e
pydantic.v1.error_wrappers.ValidationError: 1 validation error for LineList
root
LineList expected dict not int (type=type_error)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Users/mn/PycharmProjects/web_explorer/test.py", line 126, in
result = qa_chain.invoke({"question": user_input})
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 162, in invoke
raise e
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 156, in invoke
self._call(inputs, run_manager=run_manager)
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/qa_with_sources/base.py", line 152, in _call
docs = self._get_docs(inputs, run_manager=_run_manager)
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/qa_with_sources/retrieval.py", line 49, in _get_docs
docs = self.retriever.get_relevant_documents(
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain_core/retrievers.py", line 321, in get_relevant_documents
raise e
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain_core/retrievers.py", line 314, in get_relevant_documents
result = self._get_relevant_documents(
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/retrievers/web_research.py", line 177, in _get_relevant_documents
result = self.llm_chain({"question": query})
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain_core/_api/deprecation.py", line 145, in warning_emitting_wrapper
return wrapped(*args, **kwargs)
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 363, in call
return self.invoke(
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 162, in invoke
raise e
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 156, in invoke
self._call(inputs, run_manager=run_manager)
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/llm.py", line 104, in _call
return self.create_outputs(response)[0]
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/llm.py", line 258, in create_outputs
result = [
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/llm.py", line 261, in
self.output_key: self.output_parser.parse_result(generation),
File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/output_parsers/pydantic.py", line 29, in parse_result
raise OutputParserException(msg, llm_output=json_object)
langchain_core.exceptions.OutputParserException: Failed to parse LineList from completion 1. Got: 1 validation error for LineList
root
LineList expected dict not int (type=type_error)

Originally created by @Mazzesy on GitHub (Apr 16, 2024). When trying out the web_explorer, I get the error below. I have the relevant keys. Did anyone face the same issue? > Traceback (most recent call last): > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/pydantic/v1/main.py", line 522, in parse_obj > obj = dict(obj) > TypeError: 'int' object is not iterable > > The above exception was the direct cause of the following exception: > > Traceback (most recent call last): > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/output_parsers/pydantic.py", line 25, in parse_result > return self.pydantic_object.parse_obj(json_object) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/pydantic/v1/main.py", line 525, in parse_obj > raise ValidationError([ErrorWrapper(exc, loc=ROOT_KEY)], cls) from e > pydantic.v1.error_wrappers.ValidationError: 1 validation error for LineList > __root__ > LineList expected dict not int (type=type_error) > > During handling of the above exception, another exception occurred: > > Traceback (most recent call last): > File "/Users/mn/PycharmProjects/web_explorer/test.py", line 126, in <module> > result = qa_chain.invoke({"question": user_input}) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 162, in invoke > raise e > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 156, in invoke > self._call(inputs, run_manager=run_manager) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/qa_with_sources/base.py", line 152, in _call > docs = self._get_docs(inputs, run_manager=_run_manager) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/qa_with_sources/retrieval.py", line 49, in _get_docs > docs = self.retriever.get_relevant_documents( > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain_core/retrievers.py", line 321, in get_relevant_documents > raise e > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain_core/retrievers.py", line 314, in get_relevant_documents > result = self._get_relevant_documents( > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/retrievers/web_research.py", line 177, in _get_relevant_documents > result = self.llm_chain({"question": query}) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain_core/_api/deprecation.py", line 145, in warning_emitting_wrapper > return wrapped(*args, **kwargs) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 363, in __call__ > return self.invoke( > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 162, in invoke > raise e > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/base.py", line 156, in invoke > self._call(inputs, run_manager=run_manager) > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/llm.py", line 104, in _call > return self.create_outputs(response)[0] > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/llm.py", line 258, in create_outputs > result = [ > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/chains/llm.py", line 261, in <listcomp> > self.output_key: self.output_parser.parse_result(generation), > File "/Users/mn/PycharmProjects/web_explorer/venv/lib/python3.9/site-packages/langchain/output_parsers/pydantic.py", line 29, in parse_result > raise OutputParserException(msg, llm_output=json_object) > langchain_core.exceptions.OutputParserException: Failed to parse LineList from completion 1. Got: 1 validation error for LineList > __root__ > LineList expected dict not int (type=type_error)
yindo commented 2026-02-16 00:15:02 -05:00
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@bhaswata08 commented on GitHub (Apr 30, 2024):

post your langsmith trace. looks like LLM could not return json and did something like:
Here is your json:

    json_object
@bhaswata08 commented on GitHub (Apr 30, 2024): post your langsmith trace. looks like LLM could not return json and did something like: Here is your json: ```json json_object ```
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Reference: langchain-ai/web-explorer#7
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