"Ingen Sending" appears on the website.
And actually, I am happy that the website publishes this. Because the grabber will not be confused by an empty schedule.
For the grabber it is a normal schedule. Only the schedule says there is nothing.
I can delete all entries which say "Ingen Sending". But I am reluctant to do it, because this way at least I can see on the XMLTV file that the grabber is still working.