跪求解决

python报如下错误，请问怎么解决？

Traceback (most recent call last):

File "<string>", line 1, in <module>

File "/Library/Python/2.6/site-packages/pyotp/totp.py", line 44, in now

return self.generate_otp(self.timecode(datetime.datetime.now()))

File "/Library/Python/2.6/site-packages/pyotp/otp.py", line 33, in generate_otp

hasher = hmac.new(self.byte_secret(), self.int_to_bytestring(input), self.digest)

File "/Library/Python/2.6/site-packages/pyotp/otp.py", line 50, in byte_secret

return base64.b32decode(self.secret, casefold=True)

File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/base64.py", line 222, in b32decode

raise TypeError(‘Non-base32 digit found‘)

TypeError: Non-base32 digit found