zoorat [1] filed a deletion request for l2tp-ipsec-vpn [2]:

the building is not possible due to build/Release/SmartCardInfo.o file never get compiled in the first place. building breaks for people back in 2017 (https://aur.archlinux.org/packages/l2tp-ipsec-vpn/#comment-602571) better be deleted. orphan, Last Updated: 2015-06-16 00:17.

[1] https://aur.archlinux.org/account/zoorat/ [2] https://aur.archlinux.org/pkgbase/l2tp-ipsec-vpn/