fix indent error

app.py

@@ -162,9 +162,9 @@ def aggregate_vocal_times(vocal_time):
             "end_time": f"{end_time}"
         }
         )
-      except Exception as e:
+    except Exception as e:
         print(f"An exception occurred: {e}")
-      return compressed_vocal_times
+    return compressed_vocal_times
 
 def add_voice_label(json_file, audio_path):
     # Load the JSON file