GNUnet file sharing service does not work in Arch

There is currently a discussion in the Arch forum
<https://bbs.archlinux.org/viewtopic.php?id=268948> about why the GNUnet
file sharing service does not work in the current gnunet AUR package
<https://aur.archlinux.org/packages/gnunet/>. Does any of the GNUnet
developers use Arch? Would you be willing to quickly review the AUR package
and suggest what might be wrong in it?

It is possible to browse the package at
https://aur.archlinux.org/cgit/aur.git/tree/?h=gnunet, or download a
snapshot from https://aur.archlinux.org/cgit/aur.git/snapshot/gnunet.tar.gz.
AUR packages are centered around a PKGBUILD
<https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=gnunet> file.