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?