erakura [1] filed a deletion request for ttf-dmcasansserif [2]: The PKGBUILD fetches from a repl.co instance that no longer exists, rendering this package entirely broken. Seems to have been abandoned.
[1] https://aur.archlinux.org/account/erakura/ [2] https://aur.archlinux.org/pkgbase/ttf-dmcasansserif/