New Facebook App Update Not Working
Edit: this appears to be a problem that Facebook know. It's a problem with the Facebook application, and also not a generalised Play Shop concern.
This is what worked for me at least.
- Settings > Apps > All > Google Play Shop, Clear data and also Clear cache
- Settings > Apps > All > Google Play Provider > Manage room, Clear all information and also Clear cache
It doesn't injured if you reactivate your phone before you attempt upgrading facebook once again. As well as, the set up was SLOW. Just at least 4-5 minutes. However, it did job. If not attempt to uninstall it, or just wait on a fix.