fontspec error (cannot resolve fontname of NewComputerModern)

[Karl Berry]

    used to load the sans and mono shapes only like so:
    \setsansfont{NewComputerModern Sans}
    \setmonofont{NewComputerModern Mono}
    which worked.  I wonder if there is not something amiss in the naming
    scheme of the latest version.

I'm cc-ing Antonis, the creator and maintainer of NewComputerModern.
Antonis, please see the thread starting at
https://tug.org/pipermail/tex-live/2021-May/046991.html

Most package authors are not on the tex-live list. --best, karl.