[CentOS] firefox unable to load pkcs11 module

Thu Apr 2 16:47:30 UTC 2020
Tony Schreiner <anthony.schreiner at bc.edu>

CentOS 7, In firefox -> privacy & security -> certificates -> security
i am trying to load the pkcs11 modules, but get the error  unable to load.

I am following the directions at

I have installed opensc and openssl-pkcs11, which
contains /usr/lib64/openssl/engines/pkcs11.so
and am using that is the module

Has anybody here done that, and can offer advice?

Tony Schreiner