Update app.py

app.py

@@ -46,15 +46,15 @@ def get_vectorstore(text_chunks):
     vectorstore = FAISS.from_texts(texts=text_chunks, embedding=embeddings)
     return vectorstore
 
-
 def get_conversation_chain(vectorstore):
-   # llm = ChatOpenAI()
-   llm = HuggingFaceEndpoint(repo_id="google/flan-t5-base", model_kwargs={"temperature": 0.5, "max_length": 256})
-
-
+    # llm = ChatOpenAI()
+    llm = HuggingFaceEndpoint(repo_id="google/flan-t5-base", model_kwargs={"temperature": 0.5, "max_length": 256})
 
+    # Correct the indentation here
     memory = ConversationBufferMemory(
-        memory_key='chat_history', return_messages=True)
+        memory_key='chat_history', return_messages=True
+    )
+    
     conversation_chain = ConversationalRetrievalChain.from_llm(
         llm=llm,
         retriever=vectorstore.as_retriever(),