Update app.py

app.py

@@ -30,7 +30,7 @@ import uuid  # For generating unique filenames
 #from langchain_community.embeddings import HuggingFaceEmbeddings
 #*from langchain.docstore.document import Document
 #from langchain_core.documents import Document
-
+#from langchain.chains import RetrievalQA  # This one might still be in main langchain
 
 
 # NEW IMPORTS (current):
@@ -40,7 +40,7 @@ from langchain_core.documents import Document
 from langchain_community.document_loaders import TextLoader, PyPDFLoader
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain_community.llms import HuggingFaceHub
-from langchain.chains import RetrievalQA  # This one might still be in main langchain
+from langchain_community.chains import RetrievalQA
 from langchain_community.vectorstores import Chroma #from old library
 from langchain_groq import ChatGroq