[Radiant] Gallery install not working

[Bentley78]

I installed the gallery extension and it failed.  I tried to uninstall
it and it's not there but no in my admin panel I get the following
message:
GalleryExtension error gallery. /path/to/gallery.yml doesn't exist.
The website is working but I can't do anything throught he panel.  Is
there a way to completely wipe this from the config?