The article Beyoncé Knowles can only be edited by admins, while there is no current protection in place.
https://nl.wikipedia.org/wiki/Beyonc%C3%A9_Knowles
Looking in the logs:
https://nl.wikipedia.org/w/index.php?title=Speciaal:Logboeken&page=Beyonc%C3%A9+Knowles
The last protection was on 17 Jun 2015 and ended at 17 Jul 2015.
Also no cascade protection has influence here.
Why is this page protected while it should not have been protected?