I just did an update from F25 to F26 via dnf. After it boots, I can no longer start gnome terminal (nothing shows). If I ssh into the machine and try it remotely, I see the following:

$ gnome-terminal

(process:3586): Gtk-WARNING **: Locale not supported by C library.

Using the fallback 'C' locale.

Error constructing proxy for org.gnome.Terminal:/org/gnome/Terminal/Factory0: Error calling StartServiceByName for org.gnome.Terminal: Timeout was reached

So it looks like there is a locale issue in my update. Does anyone know how to fix this?