github plugin failed with no attribute 'groups' error

[schaefi]

when rapport access the github interface I got

------snip------

rapport create

Timeframe: Current week [2014-01-20T00:00:00 - 2014-01-20T10:19:56.037549]
Failed plugin github:gh: 'NoneType' object has no attribute 'groups'!
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/rapport/report.py", line 90, in
create_report results[plugin] = tmpl.render(future.result())
File "/usr/lib/python2.7/site-packages/concurrent/futures/_base.py", line
397, in result return self.__get_result()
File "/usr/lib/python2.7/site-packages/concurrent/futures/_base.py", line
356, in __get_result raise self._exception
AttributeError: 'NoneType' object has no attribute 'groups'

-------snap---------

Thanks for taking care