Per the GLEP, upstream maintainer in metadata.xml must have a <name/> specified. Please add the missing name. Also, the homepage is 404 and I suspect the upstream maintainer e-mail would be invalid too.
https://bitbucket.org/fabriceT/openbox-menu
commit ad812b1bf8e62c23428a5abdcd23ff0e78edf3f7 (HEAD -> master, origin/master, origin/HEAD) Author: Wim Muskee <wimmuskee@gmail.com> AuthorDate: Mon Nov 21 21:01:23 2016 +0100 Commit: Patrice Clement <monsieurp@gentoo.org> CommitDate: Fri Nov 25 23:00:02 2016 +0100 x11-misc/openbox-menu: update HOMEPAGE and metadata.xml. Gentoo-Bug: https://bugs.gentoo.org/582380 Closes: https://github.com/gentoo/gentoo/pull/2886 Signed-off-by: Patrice Clement <monsieurp@gentoo.org> x11-misc/openbox-menu/metadata.xml | 4 ++-- x11-misc/openbox-menu/openbox-menu-0.5.1.ebuild | 4 ++-- x11-misc/openbox-menu/openbox-menu-0.7.0.ebuild | 4 ++-- x11-misc/openbox-menu/openbox-menu-0.8.0.ebuild | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-)