Reporting Absence via Timesheet requires project and expenditure type

Summary

I'm trying to report absences via timesheet, but i'm having an error when trying to submit/save it.

Content

I'm trying to report absences via timesheet, but i'm having an error when trying to submit it. As you can see I have not made the project and the task as required fields. Does anyone have any idea what went wrong? From what I remember, it is working before.