Module googletrans 2.4.0 Question

[hlhp]

How to use googletrans for translation.
According to googletrans 2.4.0
I got error even with the official basic code.

from googletrans import Translator
translator = Translator()
translator.translate('안녕하세요.')
# <Translated src=ko dest=en text=Good evening. pronunciation=Good evening.>
translator.translate('안녕하세요.', dest='ja')
# <Translated src=ko dest=ja text=こんにちは。 pronunciation=Kon'nichiwa.>
translator.translate('veritas lux mea', src='la')
# <Translated src=la dest=en text=The truth is my light pronunciation=The truth is my light>

Error:
[Running] python -u "d:\Loading\test\test.py"
Traceback (most recent call last):
  File "d:\Loading\test\test.py", line 3, in <module>
    translator.translate('\uc548\ub155\ud558\uc138\uc694.')
  File "C:\Users\myName\Anaconda3\lib\site-packages\googletrans\client.py", line 172, in translate
    data = self._translate(text, dest, src)
  File "C:\Users\myName\Anaconda3\lib\site-packages\googletrans\client.py", line 75, in _translate
    token = self.token_acquirer.do(text)
  File "C:\Users\myName\Anaconda3\lib\site-packages\googletrans\gtoken.py", line 180, in do
    self._update()
  File "C:\Users\myName\Anaconda3\lib\site-packages\googletrans\gtoken.py", line 59, in _update
    code = unicode(self.RE_TKK.search(r.text).group(1)).replace('var ', '')
AttributeError: 'NoneType' object has no attribute 'group'

[Done] exited with code=1 in 0.732 seconds

In addition, if using Array call, will it consider one call or multiple calls? Ref Link

Advanced Usage (Bulk)
Array can be used to translate a batch of strings in a single method call and a single HTTP session. The exact same method shown above work for arrays as well.