Update app.py

app.py

@@ -6,7 +6,7 @@ from langchain_community.embeddings import HuggingFaceEmbeddings  # Correct (fro
 from langchain_community.vectorstores import FAISS  # Correct (from langchain_community)
 from langchain_community.chat_models import ChatOpenAI  # Correct (from langchain_community)
 from langchain.memory import ConversationBufferMemory  # Correct (from langchain)
-from langchain_community.chains import ConversationalRetrievalChain  # Correct (from langchain_community)
+from langchain.chains import ConversationalRetrievalChain  # Correct (from langchain)
 from htmlTemplates import css, bot_template, user_template
 from langchain_community.llms import HuggingFaceHub  # Correct (from langchain_community)