I can not delete a event

I have a problem with some event from my task scheduler. I try to delete but a pop up messenger says “could not remove event” how can I delete it? i can not edit it either. If I try edit it a pop up messange says “Could not save event to machine …”

Any solution?

Thank you

try to update the event by setting future dates and then delete the event.


Same message:

can you private message me your account email.