Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources解决

解决方法

ruby -v

rvm requirements

brew install libyaml

rvm pkg install openssl

rvm install 2.3.1 --with-openssl-dir=$HOME/.rvm/usr

gem sources -a https://ruby.taobao.org/

    sudo gem install cocoapods