python - 如何将 pdf 页面从 gTTS 保存为 mp3

Question

def play():
    global text_2
    global language
    #print(text_2)
    my_audio = gTTS(text=text_2, lang=language)
    my_audio.save("hello.mp3")

这里 text_2 是来自 pdf 的页面

当我运行它时我得到一个错误但是当我用短文本运行它时它工作得很好。

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\python3.9\lib\threading.py", line 950, in _bootstrap_inner
    self.run()
  File "C:\python3.9\lib\threading.py", line 888, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\NK Infosystem\PycharmProjects\audiobook\main.py", line 79, in play
    my_audio.save("hello.mp3")
  File "C:\python3.9\lib\site-packages\gtts\tts.py", line 311, in save
    self.write_to_fp(f)
  File "C:\python3.9\lib\site-packages\gtts\tts.py", line 293, in write_to_fp
    raise gTTSError(tts=self, response=r)
gtts.tts.gTTSError: 200 (OK) from TTS API. Probable cause: Unknown