Update app.py

app.py

@@ -240,6 +240,10 @@ qa_retriever = load_retriever(llm= llm_model, db= vector_database)
 conversational_qa_memory_retriever, question_generator = load_conversational_qa_memory_retriever()
 print("all load done")
 
+
+# Try adding this to set to clear the memory in each session
+if st.session_state.chat_history == []:
+    conversational_qa_memory_retriever.memory.chat_memory.clear()
 #Addional things for Conversation flows