remote debug with pow

byebug.rb

module Byebug
  class << self
    def start_remote_debugging
      require "byebug/core"
      require "byebug"
      port = begin
        server = TCPServer.new(nil, 0)
        server.addr[1]
      ensure
        server.close if server
      end
      "Remote debugger on port #{port}".tap do |message|
        puts message
        Rails.logger.warn message
      end
      self.wait_connection = true
      start_server('localhost', port)
      attach
    end
  end
end

create the file above
type Byebug.start_remote_debugging somehere in the code
in terminal execute bundle exec byebug -R port(shown in the development.log)