Multiple bases have instance lay-out conflict

[alpha-21]

System Info

torch = "2.0.1"
transformers = "4.31.0"
langchain= "0.0.251"
kor= "0.13.0"
openai= "0.27.8"
pydantic= "1.10.8"
python_version = "3.9"

Who can help?

No response

Information

• The official example notebooks/scripts
• My own modified scripts

Related Components

• LLMs/Chat Models
• Embedding Models
• Prompts / Prompt Templates / Prompt Selectors
• Output Parsers
• Document Loaders
• Vector Stores / Retrievers
• Memory
• Agents / Agent Executors
• Tools / Toolkits
• Chains
• Callbacks/Tracing
• Async

Reproduction

from db.tools import DbTools
from langchain.chat_models import ChatOpenAI
from kor.nodes import Object, Text, Number
from kor import create_extraction_chain, Object, Text

llm = ChatOpenAI(
model_name="gpt-3.5-turbo",
temperature=0,
max_tokens=2000,
frequency_penalty=0,
presence_penalty=0,
openai_api_key = "" ,
top_p=1.0,
)

Expected behavior

Hello I encountered the following error when trying to import the langchain.schema module:
Traceback (most recent call last):
File "/home/alpha/platform/shared/libpython/computation/fine_instruction_GPT.py", line 2, in
from langchain.chat_models import ChatOpenAI
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/init.py", line 6, in
from langchain.agents import MRKLChain, ReActChain, SelfAskWithSearchChain
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/agents/init.py", line 31, in
from langchain.agents.agent import (
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/agents/agent.py", line 15, in
from langchain.agents.agent_iterator import AgentExecutorIterator
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/agents/agent_iterator.py", line 21, in
from langchain.callbacks.manager import (
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/callbacks/init.py", line 10, in
from langchain.callbacks.aim_callback import AimCallbackHandler
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/callbacks/aim_callback.py", line 5, in
from langchain.schema import AgentAction, AgentFinish, LLMResult
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/schema/init.py", line 4, in
from langchain.schema.memory import BaseChatMessageHistory, BaseMemory
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/schema/memory.py", line 7, in
from langchain.schema.messages import AIMessage, BaseMessage, HumanMessage
File "/home/alpha/.local/share/virtualenvs/platform-_bj8LfuO/lib/python3.9/site-packages/langchain/schema/messages.py", line 147, in
class HumanMessageChunk(HumanMessage, BaseMessageChunk):
File "pydantic/main.py", line 367, in pydantic.main.ModelMetaclass.new
File "/usr/lib/python3.9/abc.py", line 85, in new
cls = super().new(mcls, name, bases, namespace, **kwargs)
TypeError: multiple bases have instance lay-out conflict

[dosubot]

🤖

Hello,

Thank you for providing detailed information about the issue you're facing. It seems like you're encountering a conflict with multiple bases having an instance layout conflict. This error typically occurs when there's a conflict between the inheritance of classes in Python.

Based on the similar issues that have been solved in the LangChain repository, here are a few suggestions that might help:

1. Update the import statement from from langchain.schema import BaseLanguageModel to from langchain.base_language import BaseLanguageModel. This was a solution provided in the issue Was Running Fine and now getting errors.

2. Try installing specific versions of the packages as follows:

pip install llama-index==0.5.6
pip install langchain==0.0.148

This was another solution suggested in the same issue mentioned above.

3. If the issue persists, try uninstalling gpt-index, langchain, and llama-index, and then reinstall them:

pip uninstall gpt-index
pip uninstall langchain
pip uninstall llama-index
pip install gpt-index
pip install langchain
pip install llama-index

This was also a solution provided in the same issue.

4. If your script is named langsmith.py, consider renaming it to something like langsmith_test.py or any name that doesn't mask the langsmith module name. This was a solution provided in the issue LangChain 0.0.250 circular import bug, possibly LangSmith related.

5. Try updating LangChain and llama-index to the latest versions and restarting the Kernel on Jupyter Notebook. This was a solution provided in the issue Cannot import name 'HumanMessage' from 'langchain.schema'.

Please try these solutions and let us know if any of them work for you. If the issue persists, please provide more details about the error and we'll be glad to assist you further.

Best,
Dosu

Sources

• Was Running Fine and now getting errors
• LangChain 0.0.250 circular import bug, possibly LangSmith related
• Cannot import name 'HumanMessage' from 'langchain.schema'

---

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[alpha-21]

Thank but i have the same issues

[Veghit]

I have the same issue. Updating Pydantic to 1.10.12 solved it, but if conflicts with other requirements in my project.

[khanhphan1311]

I have the same issue. Updating Pydantic to 1.10.12 solved it, but if conflicts with other requirements in my project.

This works for me like magic. Many thanks.

[shuish0071]

I have the same issue. Updating Pydantic to 1.10.12 solved it, but if conflicts with other requirements in my project.

Thank you so muck, it works !

[HissaanAli]

I have the same issue. Updating Pydantic to 1.10.12 solved it, but if conflicts with other requirements in my project.

Same, worked for me as well.

[haiwang-joe]

I have the same issue. Updating Pydantic to 1.10.12 solved it, but if conflicts with other requirements in my project.

I works for me, thanks.