Space desktop snap and Pop!_OS 20.04 LTS

In case someone else comes across this:

I upgraded my Pop!_OS 19.10 to the 20.04 LTS version. Afterwards, I could not launch the Space app. The message I ever saw was the highly helpful "snap/space/9/space: error while loading shared libraries: libX11.so.6: cannot open shared object file: No such file or directory"

Resolution: reinstall the snap