In the function start_end_date_for_period, in the "else" clause, the case considered for the period is "once". In this case, start_date and end_date are either False or in string format. opw: 631941
In the function start_end_date_for_period, in the "else" clause, the case considered for the period is "once". In this case, start_date and end_date are either False or in string format. opw: 631941