java.io.IOException: Cannot run program "rake" (in directory "/var/jenkins/workspace/HendricksFeaturesCopy"): error=2, No such file or directory

/var/jenkins/workspace/HendricksFeaturesCopy

import 'lib/tasks/yard-docs.rake'

require 'yard'
namespace :yard_docs do

  desc 'Generate Yard Documentation'
  task :generate do
    # Generate Yard Documentation
  end
end