Не работает синтез речи Silero

 import os  
 
  
 
from gtts import gTTS  
 
from io import BytesIO  
 
import torch  
 
import sounddevice as sd  
 
import soundfile as sf  
 
  
 
  
 
def speaker_gtts(text):  
 
    lang = os.getenv('LANG')  
 
    with BytesIO() as f:  
 
        gTTS(text=text, lang=lang, slow=False).write_to_fp(f)  
 
        f.seek(0)  
 
        data, fs = sf.read(f)  
 
        sd.play(data, fs, blocking=True)  
 
  
 
  
 
models_urls = ['https://models.silero.ai/models/tts/en/v3_en.pt',  
 
               'https://models.silero.ai/models/tts/ru/v3_1_ru.pt']  
 
  
 
model_ru = 'silero_models/ru/model.pt'  
 
model_en = 'silero_models/en/model.pt'  
 
  
 
device = torch.device('cpu')  
 
torch.set_num_threads(4)  
 
local_file = model_ru  
 
  
 
if not os.path.isfile(local_file):  
 
    torch.hub.download_url_to_file(models_urls[0],  
 
                                   local_file)  
 
  
 
model = torch.package.PackageImporter(local_file).load_pickle("tts_models", "model")  
 
model.to(device)  
 
  
 
sample_rate = 48000  
 
speaker = 'baya' #aidar, baya, kseniya, xenia, eugene  
 
en_speaker = 'en_6' #от 0 до 117  
 
  
 
  
 
def speaker_silero(text):  
 
    audio = model.apply_tts(text='Привет! Как дела?',  
 
                                speaker=speaker,  
 
                                sample_rate=sample_rate)  
 
  
 
    sd.play(audio, blocking=True)