Update app.py

app.py

@@ -6,7 +6,7 @@ from cached_path import cached_path
 import tempfile
 import numpy as np
 from vinorm import TTSnorm
-from infer_zipvoice import model, tokenizer, feature_extractor, device, generate_sentence
+from infer_zipvoice import model, tokenizer, feature_extractor, device, generate_sentence, vocoder
 from utils import preprocess_ref_audio_text, save_spectrogram, chunk_text
 
 # Retrieve token from secrets