Update app.py

app.py

@@ -130,8 +130,7 @@ def chat(user_message, history):
     if history is None:
         history = []
 
-    history.append({"role": "user", "content": user_message})
-    history.append({"role": "assistant", "content": response})
+        history.append((user_message, response))
 
     return history, history
 
@@ -146,7 +145,7 @@ with gr.Blocks() as app:
     file = gr.File(label="Upload PDF")
     status = gr.Textbox(label="Status")
 
-    chatbot = gr.Chatbot(type="messages")  # IMPORTANT FIX
+    chatbot = gr.Chatbot()  # IMPORTANT FIX
     msg = gr.Textbox(placeholder="Ask your question...")
     state = gr.State([])