I finally got the error fixed.
here's what happened, I am running a Plesk Onyx server, and installed the NodeJS update according to this guide:
And while everything looked good within Plesk, when I ran the command:
the old v8.9.1 of NodeJS would show as being current...
so all I did was this:
nvm use 10.15 npm install npm rebuild
now everything is finally running just fine again