Duplicate player

All my podcast episodes suddenly have a duplicate player for every entry.
I am using the default template and when I add some text to the template then it is added at the bottom of the second player.


What am I doing wrong?
If I look in the source of the page then I see that the iframe is twice in the page.
Url to the page https://www.omroepspakenburg.nl/uitzending-gemist-radio/