lib error

agent.py

@@ -2,7 +2,7 @@ import os
 
 from datasets import load_dataset
 from dotenv import load_dotenv
-from langchain.embeddings import HuggingFaceEmbeddings
+from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain.schema import Document
 from langchain.tools.retriever import create_retriever_tool
 from langchain.vectorstores import Chroma

requirements.txt

@@ -12,4 +12,5 @@ langgraph
 huggingface_hub
 chromadb
 sentence-transformers
-python-dotenv
+python-dotenv
+protobuf==3.20.*