runtime error

Traceback (most recent call last): File "/home/user/app/app.py", line 4, in <module> from chains.local_doc_qa import LocalDocQA File "/home/user/app/chains/local_doc_qa.py", line 1, in <module> from langchain.embeddings.huggingface import HuggingFaceEmbeddings ModuleNotFoundError: No module named 'langchain'

Container logs: