error while trying to call gpt4allj.langchain

[Muhamad-Nady]

Hi I am trying to call "from gpt4allj.langchain import GPT4AllJ", but i get that error
'''ModuleNotFoundError: No module named 'langchain.callbacks.manager'''
I have istalled langchain + gpt4lallj + gpt4all
why i get that error. could any one help me

[marella]

Hi, to fix the error you are getting, you may have to update langchain: pip install 'langchain>=0.0.208'

Also this library is outdated. Please use ctransformers library which supports more models and has more features. It is integrated into LangChain. See LangChain docs.

You can download the latest version of gpt4all-j model from here.