Update app.py

app.py

@@ -178,7 +178,7 @@ for j, tab in enumerate(audio_tabs):
                     ],
                 }
             )
-            df.style \
+            df = df.style \
               .format_index(str.upper, axis=1) \
               .relabel_index(["Lecturer", "Audience"], axis=0) \
               .set_properties({"background-color": "white"})
@@ -239,7 +239,7 @@ for j, tab in enumerate(audio_tabs):
                     "Percentage": ["{:.2f}%".format(100*sp/totalSeconds) for sp in all_speaker_times],
                 }
             )
-            df.style \
+            df = df.style \
               .format_index(str.upper, axis=1) \
               .relabel_index([f"speaker {sp}" for sp in range(len(all_speaker_times))], axis=0) \
               .set_properties({"background-color": "white"})