fake_useragent.errors.FakeUserAgentError: Error occurred during getting browser 使用这个为什么报错这个的呢？

我在百度上找不到这个解决方案

I am getting the same issue with creating a fake_useragent object.

from fake_useragent import UserAgent
ua = UserAgent()

Results in :

Traceback (most recent call last):
File “filepath\lib\site-packages\fake_useragent\fake.py”, line 136, in getattr
return random.choice(self.data_browsers[browser])
KeyError: 'len’
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File “filepath\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\193.6494.30\plugins\python\helpers\pydev_pydevd_bundle\pydevd_thrift.py”, line 274, in frame_vars_to_struct
value = var_to_struct(v, str(k), evaluate_full_value=eval_full_val)
File “filepath\AppData\Local\JetBrains\Toolbox\apps\PyCharm-P\ch-0\193.6494.30\plugins\python\helpers\pydev_pydevd_bundle\pydevd_thrift.py”, line 358, in var_to_struct
elif hasattr(v, ‘len’) and not is_string(v):
File “filepath\lib\site-packages\fake_useragent\fake.py”, line 139, in getattr
raise FakeUserAgentError(‘Error occurred during getting browser’) # noqa
fake_useragent.errors.FakeUserAgentError: Error occurred during getting browser
Unexpected error, recovered safely.

I am using Python 3.7.