pyttsx3代码显示errror使用此代码帮助我这是读取字符串的简单代码

如何解决pyttsx3代码显示errror使用此代码帮助我这是读取字符串的简单代码

import pyttsx3
ob=pyttsx3.init()
voice=ob.getProperty('voices')
ob.say("happy independence day") 
ob.runAndWait()

这是我尝试读取字符串“独立日快乐”的代码，但我无法这样做。.这里显示很多错误

C:\Users\tamta\PycharmProjects\pythonpractice\venv\Scripts\python.exe C:/Users/tamta/PycharmProjects/pythonpractice/august.py
Traceback (most recent call last):
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\__init__.py",line 20,in init
    eng = _activeEngines[driverName]
  File "C:\Users\tamta\AppData\Local\Programs\Python\python37\lib\weakref.py",line 137,in __getitem__
    o = self.data[key]()
KeyError: None

在处理上述异常期间，发生了另一个异常：

Traceback (most recent call last):
  File "C:/Users/tamta/PycharmProjects/pythonpractice/august.py",line 3,in <module>
    ob=pyttsx3.init()
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\__init__.py",line 22,in init
    eng = Engine(driverName,debug)
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\engine.py",line 30,in __init__
    self.proxy = driver.DriverProxy(weakref.proxy(self),driverName,debug)
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\driver.py",line 52,in __init__
    self._driver = self._module.buildDriver(weakref.proxy(self))
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\drivers\sapi5.py",in buildDriver
    return SAPI5Driver(proxy)
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\drivers\sapi5.py",line 47,in __init__
    self.setProperty('voice',self.getProperty('voice'))
  File "C:\Users\tamta\PycharmProjects\pythonpractice\venv\lib\site-packages\pyttsx3\drivers\sapi5.py",line 90,in getProperty
    return self._tts.Voice.Id
_ctypes.COMError: (-2147024809,'The parameter is incorrect.',(None,None,None))

Process finished with exit code 1