Update app.py

app.py

@@ -38,7 +38,7 @@ def respond(message, chat_history):
     qa = ConversationalRetrievalChain.from_llm(model, retriever)
 
     bot_message = qa({"question": message, "chat_history": chat_history})
-    chat_history.append((message, bot_message['answer']))
+    chat_history = [(message, bot_message["answer"])]
     time.sleep(1)
     return "", chat_history
 
@@ -56,6 +56,7 @@ with gr.Blocks() as demo:
         api_check_button = gr.Button("Get API Key")
         api_print = gr.Textbox(label = "OpenAI API Key - Please ensure the API Key is set correctly")
         chatbot = gr.Chatbot(label="ChatGPT Powered Coding Assistant")
+        chat_history = []
         msg = gr.Textbox(label="User Prompt", placeholder="Your Query Here")
         clear = gr.Button("Clear")