LinOTP email autoenrollment issue

[pmiriyev]

Hello, cant get working email auto enrollment, here is log:

TypeError: character mapping must return integer, None or unicode
2021/02/04 - 14:53:17 ERROR [linotp.controllers.validate][check #260] [check] validate/check failed: TypeError('character ma$
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/linotp/controllers/validate.py", line 231, in check
(ok, opt) = self._check(param)
File "/usr/lib/python2.7/dist-packages/linotp/controllers/validate.py", line 161, in _check
(ok, opt) = vh.checkUserPass(user, passw, options=options)
File "/usr/lib/python2.7/dist-packages/linotp/lib/auth/validate.py", line 573, in checkUserPass
options=options)
File "/usr/lib/python2.7/dist-packages/linotp/lib/token.py", line 343, in auto_enrollToken
raise exx
TypeError: character mapping must return integer, None or unicode