brew reinstall nvm
# NVM Stuff
export NVM_DIR="$HOME/.nvm"
. "/usr/local/opt/nvm/nvm.sh"
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && . "$NVM_DIR/bash_completion"
# This loads nvm bash_completion
Check your .bash_profile, .zshrc, or .profile file.
You most likely had a problem during the installation.
You should have the following at the end of one of those files.
[[ -s $HOME/.nvm/nvm.sh ]] && . $HOME/.nvm/nvm.sh # This loads NVM