Error while deploying my app

Deployment
1 
Traceback (most recent call last):

  File "/home/appuser/venv/lib/python3.9/site-packages/streamlit/script_runner.py", line 354, in _run_script

    exec(code, module.__dict__)

  File "/app/test/app.py", line 4, in <module>

    from langchain.text_splitter import CharacterTextSplitter

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/__init__.py", line 8, in <module>

    from langchain.agents import MRKLChain, ReActChain, SelfAskWithSearchChain

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/agents/__init__.py", line 2, in <module>

    from langchain.agents.agent import Agent

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/agents/agent.py", line 8, in <module>

    from langchain.chains.base import Chain

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/chains/__init__.py", line 2, in <module>

    from langchain.chains.conversation.base import ConversationChain

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/chains/conversation/base.py", line 7, in <module>

    from langchain.chains.conversation.memory import ConversationBufferMemory

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/chains/conversation/memory.py", line 7, in <module>

    from langchain.chains.conversation.prompt import SUMMARY_PROMPT

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/chains/conversation/prompt.py", line 2, in <module>

    from langchain.prompts.prompt import PromptTemplate

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/prompts/__init__.py", line 2, in <module>

    from langchain.prompts.base import BasePromptTemplate

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/prompts/base.py", line 35, in <module>

    class BasePromptTemplate(BaseModel, ABC):

  File "/home/appuser/venv/lib/python3.9/site-packages/langchain/prompts/base.py", line 41, in BasePromptTemplate

    @root_validator()

  File "/home/appuser/venv/lib/python3.9/site-packages/pydantic/deprecated/class_validators.py", line 228, in root_validator

    raise PydanticUserError(

pydantic.errors.PydanticUserError: If you use `@root_validator` with pre=False (the default) you MUST specify `skip_on_failure=True`. Note that `@root_validator` is deprecated and should be replaced with `@model_validator`.



For further information visit https://errors.pydantic.dev/2.1.0/u/root-validator-pre-skip
2

Hi @abhijithjainn, and welcome to our forums! :raised_hands:

The error may come from the LangChain package, which is not compatible with your current Pydantic version due to a change in how Pydantic handles validation.

You can maybe try downgrading Pydantic to an earlier version, like 1.8, with pip install pydantic==1.8.

Let us know if that works! :slight_smile:

Thanks,
Charly

2 Likes
3

Hey thanks it worked, however i am facing another issue now.

ModuleNotFoundError: No module named ‘langchain.chains.question_answering’

I had this locally aswell, but then i uninstalled & reinstalled langchain & it worked. How to fix it here?

4

Is it working locally?

5

Yes it is working on my local host!

6

Potentially worth downgrading to an earlier version of Langchain, see if that solves the issue?

Thanks,
Charly

7

I tried downgrading, but it seems to be not working :frowning:

1 Like
8

This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.