Установите Ruby и Rails на Mac
brew install rbenv ruby-build
# Add rbenv to bash so that it loads every time you open a terminal
echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.zshrc
source ~/.zshrc
# Install Ruby
rbenv install 2.6.6
rbenv global 2.6.6
ruby -v
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