MarsSeed [1] filed a deletion request for python2-django-localflavor [2]: Python2-django (its dependency) has been deleted, so now this is broken. But not needed by anything on AUR anymore. Also, last updated in 2017. I recommend deleting this package that has become obsolete.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-django-localflavor/
