When an GTFS is provided without only calendar_dates.txt and only a negative instance, the conversion can't find a DayTypeRef. This might not be a problem for valid feed, but I wonder what would happen if a ServiceJourney does not have any valid dates, this might fail.
When an GTFS is provided without only
calendar_dates.txtand only a negative instance, the conversion can't find aDayTypeRef. This might not be a problem for valid feed, but I wonder what would happen if a ServiceJourney does not have any valid dates, this might fail.