Update app.py

app.py

@@ -876,7 +876,7 @@ try:
             timeline_df = speakers_dataFrame.copy()
             timeline_df["Resource"] = timeline_df["Resource"].apply(lambda s: get_display_name(s, currFileIndex))
             base = dt.datetime.combine(dt.date.today(), dt.time.min)
-                        def to_audio_datetime(s):
+            def to_audio_datetime(s):
                 # If already a datetime/Timestamp, extract seconds since midnight of that date
                 if isinstance(s, (dt.datetime, pd.Timestamp)):
                     midnight = s.replace(hour=0, minute=0, second=0, microsecond=0)