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Published 20 hours ago • verified publisher icon langflow-ai

Cannot import name 'BaseLanguageModel' from 'langchain.schema'

Open ernestp opened this issue 1 year ago • 4 comments

Describe the bug A clear and concise description of what the bug is.

Browser and Version

  • N/A
  • macOS 13.3.1 (22E261)

To Reproduce Steps to reproduce the behavior:

  1. Install miniconda with Python 3.10.10
  2. Install langflow
  3. Run langflow
  4. See error: ImportError: cannot import name 'BaseLanguageModel' from 'langchain.schema' (/Users/user/miniconda3/lib/python3.10/site-packages/langchain/schema.py)

ernestp avatar May 01 '23 04:05 ernestp

% langflow
Traceback (most recent call last): File "/Users/user/miniconda3/bin/langflow", line 5, in from langflow.main import main File "/Users/user/miniconda3/lib/python3.10/site-packages/langflow/init.py", line 1, in from langflow.interface.loading import load_flow_from_json File "/Users/user/miniconda3/lib/python3.10/site-packages/langflow/interface/loading.py", line 21, in from langflow.interface.agents.custom import CUSTOM_AGENTS File "/Users/user/miniconda3/lib/python3.10/site-packages/langflow/interface/agents/init.py", line 1, in from langflow.interface.agents.base import AgentCreator File "/Users/user/miniconda3/lib/python3.10/site-packages/langflow/interface/agents/base.py", line 6, in from langflow.interface.agents.custom import CUSTOM_AGENTS File "/Users/user/miniconda3/lib/python3.10/site-packages/langflow/interface/agents/custom.py", line 31, in from langchain.schema import BaseLanguageModel ImportError: cannot import name 'BaseLanguageModel' from 'langchain.schema' (/Users/user/miniconda3/lib/python3.10/site-packages/langchain/schema.py)

ernestp avatar May 01 '23 05:05 ernestp

Same error here. Checked the latest langchain API, and it does not have this "BaseLanguageModel" class. https://github.com/hwchase17/langchain/blob/master/langchain/schema.py

LiangGou avatar May 01 '23 06:05 LiangGou

langchain-0.0.154 broke this. Run

pip install langchain==0.0.153

to pin the old version.

pixelkaiser avatar May 01 '23 09:05 pixelkaiser

faced the same issue, downgrading to 0.0.153 helped install langchain==0.0.153

nivasbasker avatar May 01 '23 12:05 nivasbasker

I'll push a hotfix very soon

ogabrielluiz avatar May 01 '23 21:05 ogabrielluiz

confirming fix

ernestp avatar May 02 '23 03:05 ernestp

aiohttp==3.8.4 aiosignal==1.3.1 async-timeout==4.0.2 attrs==23.1.0 certifi==2023.5.7 charset-normalizer==3.1.0 colorama==0.4.6 dataclasses-json==0.5.7 frozenlist==1.3.3 gpt-index==0.6.0 greenlet==2.0.2 idna==3.4 langchain==0.0.165 llama-index==0.6.5 marshmallow==3.19.0 marshmallow-enum==1.5.1 multidict==6.0.4 mypy-extensions==1.0.0 numexpr==2.8.4 numpy==1.24.3 openai==0.27.6 openapi-schema-pydantic==1.2.4 packaging==23.1 pandas==2.0.1 pydantic==1.10.7 python-dateutil==2.8.2 python-dotenv==1.0.0 pytz==2023.3 PyYAML==6.0 regex==2023.5.5 requests==2.29.0 six==1.16.0 SQLAlchemy==2.0.13 tenacity==8.2.2 tiktoken==0.4.0 tqdm==4.65.0 typing-inspect==0.8.0 typing_extensions==4.5.0 tzdata==2023.3 urllib3==1.26.15 yarl==1.9.2

charanhu avatar May 11 '23 15:05 charanhu