ruby-2.2 selenium-webdriver-3.4 Missing 'marionetteProtocol'
gem install selenium-webdriver -v 2.53.0
gem 'selenium-webdriver', '= 2.53.0'
require 'selenium-webdriver'
gem install selenium-webdriver -v 2.53.0
gem 'selenium-webdriver', '= 2.53.0'
require 'selenium-webdriver'