Update app.py

app.py

@@ -10,13 +10,13 @@ import json
 # for tokenizing texts and splitting them into chunks of documents
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 # for turning documents into embeddings before putting them in vector store
-from langchain.embeddings import HuggingFaceEmbeddings
+from langchain_community.embeddings import HuggingFaceEmbeddings
 # for vector store for documents
-from langchain.vectorstores import Chroma
+from langchain_community.vectorstores import Chroma
 
 ### 3. For Querying LLM
 # for loading HuggingFace LLM models from the hub
-from langchain.llms import HuggingFaceHub
+from langchain_community.llms import HuggingFaceHub
 # for querying LLM conveniently using the context
 from langchain.chains.question_answering import load_qa_chain