All X11 issues seems to show the snap player don’t find any active display.
I tried with Debian9&10 with Intel NUCs or Sticks when the first Linux Client 1.8 has been released, and I did not validate this solution (Gnome troubles, Intel Drivers problems etc…)
Today, I run my Intel Players with Ub18.04LTS (do not download specific materials updates during install) with Kernel5 and there is much less stability issues.