500 error when opening page attributes

when i want to change page attributes by opening from the page itself, setting, attributes, or by using the sitemap, clicking a page, and then page attributes, both ways i get an 500 error that something thats requested, is returning more than one, anyone knows why and how to debug this?

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VolgensBartjes replied on at Permalink Reply
please check the attachment, anybody plz? :(
Mnkras replied on at Permalink Reply
This will be fixed in the next version of concrete5, (fixed in the following commit:https://github.com/concrete5/concrete5/commit/03a23b37277231d23c687e... )
you can make that code-change safely on your install.
VolgensBartjes replied on at Permalink Reply
thnx, almost a month ago, that's a long time, when will the update be? happy i'm a coder, normal user couldn't do this...