Error message

• Notice: Undefined index: groupby_times in template_preprocess_calendar_week() (line 485 of /home/customer/www/civicsolidarity.org/public_html/sites/all/modules/calendar/theme/theme.inc).
• Notice: Undefined index: groupby_times in template_preprocess_calendar_week() (line 489 of /home/customer/www/civicsolidarity.org/public_html/sites/all/modules/calendar/theme/theme.inc).