Answer by Matt Olsen for nvm ls-remote command results in "N/A"

I had this same problem, but none of the other solutions helped. curl -v $NVM_NODEJS_ORG_MIRROR/ showed TLS 1.2 and no problem with certs. When I tried which curl, it turns out that I had an anaconda3/bin directory in my PATH, which has it's own version of curl (not sure why they need that). Once I fixed my path, nvm ls-remote worked just fine. Hope this helps save someone else some frustration.