fix bug

app.py

@@ -22,7 +22,7 @@
 import logging
 import os,torch
 import time
-
+from mtts.models.vocoder import *
 import gradio as gr
 import yaml
 from model import get_pretrained_model, language_to_models

model.py

@@ -1,5 +1,5 @@
 import torch,json,os
-from mtts.models.vocoder import *
+
 from scipy.io import wavfile
 
 import numpy as np