NetworkManager error while loading shared libraries

Hi There,

I just finished doing a clean install of Slackware -current, I'm getting an error I've not come across before (which is not hard to do), this error appears to basically render NetworkManager useless, has anyone come across this before. I di do a search in the forum, nothing:

/usr/sbin/NetworkManager: error while loading shared libraries: libbrotlidec.so.1: cannot open shared object file: No file or directory

Thanks for any input or direction.