Update app.py

app.py

@@ -18,6 +18,7 @@ from GPT_SoVITS.module.models import SynthesizerTrn
 from GPT_SoVITS.AR.models.t2s_lightning_module import Text2SemanticLightningModule
 from GPT_SoVITS.text import cleaned_text_to_sequence
 from GPT_SoVITS.text.cleaner import clean_text
+import GPT_SoVITS.utils
 from time import time as ttime
 from GPT_SoVITS.module.mel_processing import spectrogram_torch
 import tempfile