ImportError: cannot import name 'StructuredTool' from 'langchain.tools'

[vipervs]

trying on a MacBook M2

(venv_pdfGPT)  ~/pdfGPT/ [main*] lc-serve deploy local api --platform linux/amd64 Traceback (most recent call last): File "/opt/homebrew/bin/lc-serve", line 5, in from lcserve.main import serve File "/opt/homebrew/lib/python3.11/site-packages/lcserve/init.py", line 16, in from .backend.slackbot import SlackBot File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/slackbot/init.py", line 1, in from .slackbot import SlackBot File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/slackbot/slackbot.py", line 24, in from langchain.tools import StructuredTool ImportError: cannot import name 'StructuredTool' from 'langchain.tools' (/Users/andi/Library/Python/3.11/lib/python/site-packages/langchain/tools/init.py) (venv_pdfGPT)  ~/pdfGPT/ [main*] lc-serve deploy local api
Traceback (most recent call last): File "/opt/homebrew/bin/lc-serve", line 5, in from lcserve.main import serve File "/opt/homebrew/lib/python3.11/site-packages/lcserve/init.py", line 16, in from .backend.slackbot import SlackBot File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/slackbot/init.py", line 1, in from .slackbot import SlackBot File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/slackbot/slackbot.py", line 24, in from langchain.tools import StructuredTool ImportError: cannot import name 'StructuredTool' from 'langchain.tools' (/Users/andi/Library/Python/3.11/lib/python/site-packages/langchain/tools/init.py)

[zac-li]

What's langchain version in your venv? Looks like this is a dependency issue. BTW you don't need --platform linux/amd64 when running in local.

[vipervs]

somehow the problem changed:

(venv_pdfGPT)  ~/pdfGPT/ [main*] lc-serve deploy local api
Traceback (most recent call last): File "/opt/homebrew/bin/lc-serve", line 5, in from lcserve.main import serve File "/opt/homebrew/lib/python3.11/site-packages/lcserve/init.py", line 15, in from .backend import download_df, job, serving, slackbot, upload_df File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/init.py", line 3, in from .gateway import LangchainFastAPIGateway, PlaygroundGateway, ServingGateway File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/gateway.py", line 36, in from .langchain_helper import ( File "/opt/homebrew/lib/python3.11/site-packages/lcserve/backend/langchain_helper.py", line 9, in from fastapi import WebSocket File "/opt/homebrew/lib/python3.11/site-packages/fastapi/init.py", line 7, in from .applications import FastAPI as FastAPI File "/opt/homebrew/lib/python3.11/site-packages/fastapi/applications.py", line 16, in from fastapi import routing File "/opt/homebrew/lib/python3.11/site-packages/fastapi/routing.py", line 22, in from fastapi import params File "/opt/homebrew/lib/python3.11/site-packages/fastapi/params.py", line 5, in from pydantic.fields import FieldInfo, Undefined ImportError: cannot import name 'Undefined' from 'pydantic.fields' (/opt/homebrew/lib/python3.11/site-packages/pydantic/fields.py)

(venv_pdfGPT)  ~/pdfGPT/ [main*] pip show langchain
Name: langchain Version: 0.0.275 Summary: Building applications with LLMs through composability Home-page: https://github.com/langchain-ai/langchain Author: Author-email: License: MIT Location: /Users/andi/pdfGPT/venv_pdfGPT/lib/python3.11/site-packages Requires: aiohttp, dataclasses-json, langsmith, numexpr, numpy, pydantic, PyYAML, requests, SQLAlchemy, tenacity Required-by: langchain-serve (venv_pdfGPT)  ~/pdfGPT/ [main*] pip show langchain-serve Name: langchain-serve Version: 0.0.61 Summary: Langchain Serve - serve your langchain apps on Jina AI Cloud. Home-page: https://github.com/jina-ai/langchain-serve/ Author: Jina AI Author-email: [email protected] License: Apache 2.0 Location: /Users/andi/pdfGPT/venv_pdfGPT/lib/python3.11/site-packages Requires: click, jcloud, jina, jina-hubble-sdk, langchain, nest-asyncio, requests, slack-bolt, textual, toml Required-by: (venv_pdfGPT)  ~/pdfGPT/ [main*] pip show fastapi
pip show pydantic Name: fastapi Version: 0.103.0 Summary: FastAPI framework, high performance, easy to learn, fast to code, ready for production Home-page: Author: Author-email: Sebastián Ramírez [email protected] License: Location: /Users/andi/pdfGPT/venv_pdfGPT/lib/python3.11/site-packages Requires: pydantic, starlette, typing-extensions Required-by: gradio, jina Name: pydantic Version: 2.3.0 Summary: Data validation using Python type hints Home-page: Author: Author-email: Samuel Colvin [email protected], Eric Jolibois [email protected], Hasan Ramezani [email protected], Adrian Garcia Badaracco [email protected], Terrence Dorsey [email protected], David Montague [email protected] License: Location: /Users/andi/pdfGPT/venv_pdfGPT/lib/python3.11/site-packages Requires: annotated-types, pydantic-core, typing-extensions Required-by: fastapi, gradio, jina, langchain, langsmith

[zac-li]

hmm I thought the lc-serve should be from venv_pdfGPT (/Users/andi/pdfGPT/venv_pdfGPT/bin/lc-serve), not /opt/homebrew/bin/lc-serves?