Update app.py

app.py

@@ -137,7 +137,8 @@ def answer_query(question: str):
     return chat_history
 
 with gr.Blocks() as demo:
-    chatbot = gr.Chatbot(label="Chatbot", title="PDF QA System", description="Ask questions based on the provided PDF.")
+    interface=gr.Interface(title="PDF QA System", description="Ask questions based on the provided PDF.")
+    chatbot = gr.Chatbot(label="Chatbot")
     question = gr.Textbox(label="Ask a question", placeholder="Type your question...")
 
     question.submit(answer_query, inputs=[question], outputs=[chatbot])