WD MyBook Drive Disappeared

I have an Asus Chromebox running LibreElec. I recently added a WDMyBook device locally via USB on the Chromebox itself. It worked perfectly for several weeks with no need for any modification. I was able to access it locally via the Kodi interface under the root file system under media, as well as over my network with my laptop. My daughter went to watch a movie today and it states the file couldn’t be found. The entire drive and it’s contents are gone. It won’t show up in Kodi, or via the network on my laptop. It works fine when I unplug it from the Chromebox and and plug it directly into my laptop and all the files are still there and function, so it doesn’t seem to be an issue with the drive itself. Rebooted the Chromebox, and reset the drive but nothing works. I just moved a ton of media onto this thing. Any ideas?