This is an issue with the Creative Cloud Application installation on your computer. First try restarting the computer.
If that doesn’t work then go into the Creative Cloud App and go to help>About Creative cloud. Is it running version 184.108.40.2067? If not then please update Creative Cloud.
If it is showing that version then you probably need uto uninstall and reinstall creative cloud (not Photoshop, I mean creative Cloud itself).
If that doesn’t work then you will need to Contact Adobe. The Creatiove Cloud App handled CCX installations. If the Creative Cloud App isn’t working then Adobe will need to fix it for you., There is not anythign I can do other than to tell you to reinstall Creative Cloud (which usually does fix it).