Please post the crashlog(home/root/logs),without Crash not possible to help.With ATV 7.X py3 Images there is a problem with utf-8(with next updates it´s fixed),I think this is your problem too.But better is you post here the crashlog.
With next ATV7.1 and 7.2 the utf-8 bug is fixed: Repair utf8 (#2688) · openatv/enigma2@68e21f6 · GitHub