Update app.py

app.py

@@ -1238,7 +1238,7 @@ def create_gradio_interface():
                 generate_podcast_btn.click(
                     fn=generate_podcast_ui,
                     inputs=[
-                        podcast_doc_selector,
+                        doc_dropdown_content,
                         podcast_style,
                         podcast_duration,
                         host1_voice_selector,