Unicode errors in the iCal components

[ofosos]

I'm seeing the following errors in the log:

1]: UnicodeEncodeError: 'ascii' codec can't encode character u'\xdf' in position 1]: [2018-03-29 22:14:25,711] ERROR in app: Exception on /calendarEntry [GET] 1]: Traceback (most recent call last): 1]: File "/home/nomaden/nomaden-termine/env/local/lib/python2.7/site-packages/ 1]: response = self.full_dispatch_request() 1]: File "/home/nomaden/nomaden-termine/env/local/lib/python2.7/site-packages/ 1]: rv = self.handle_user_exception(e) 1]: File "/home/nomaden/nomaden-termine/env/local/lib/python2.7/site-packages/ 1]: reraise(exc_type, exc_value, tb) 1]: File "/home/nomaden/nomaden-termine/env/local/lib/python2.7/site-packages/ 1]: rv = self.dispatch_request() 1]: File "/home/nomaden/nomaden-termine/env/local/lib/python2.7/site-packages/ 1]: return self.view_functionsrule.endpoint 1]: File "/home/nomaden/nomaden-termine/nomaden.py", line 581, in calendar_ent 1]: e.name = "Nomaden im {}, {} ({})".format(appo.name, appo.street, appo.pu 1]: UnicodeEncodeError: 'ascii' codec can't encode character u'\xdf' in position