Obsolete URI used by media-libs/taglib-1.9.1-r2 ebuild file is: HOMEPAGE="https://developer.kde.org/~wheeler/taglib.html" It should be: HOMEPAGE="https://taglib.github.io/"
Thanks, fixed in git. https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f214212f619bbae4ce47a7f09d0b97f4b305aa43