Update app.py

app.py

@@ -258,7 +258,7 @@ def process_media(file_path, is_url=False):
     prevent_initial_call=True
 )
 def handle_document_actions(summarize_clicks, minutes_clicks, download_clicks, transcript):
-    ctx = dash.callback_context
+    ctx = callback_context
     if not ctx.triggered:
         return "", "", None