This is an output of a function, for now, you can’t do anything about it. (If you remove certain cron jobs, It will go away, but that is not a solution). However this in no way hurt any functionality.
For now, you can ignore this message, this is just an internal notification from code. This does not create any issues, will suppress this notification later.
Its annoying but you can suppress the mail until they get around to fixing this error in their code. Edit /etc/crotab and change to below, adding the > /dev/null 2>&1