Update app.py

app.py

@@ -162,7 +162,7 @@ with gr.Blocks(theme=theme) as demo:
     with gr.Row():
         with gr.Column():
             gr.Markdown(topics)  # Show the topics on the left side
-            gr.HTML(youtube_iframe())  # Embed the iframe on the left side
+            gr.HTML(youtube_iframe)  # Embed the iframe on the left side
         with gr.Row():
             with gr.Column():
                 question = gr.Textbox(label="Your question", placeholder="What would you like to know?")