不让我使用。包括吗？（尝试编写ruby游戏）

我正在尝试编写一个基于文本的ruby游戏，但我不知道什么不允许我的代码使用.includes？方法

以下是我遇到的错误：

game.rb:31:in `home': undefined method `includes?' for "run":String (NoMethodError)
    from game.rb:20:in `call'
    from game.rb:20:in `play'
    from game.rb:69:in `<main>'

我的其他文件levels.rb如下：

module Levels

    def prompt
      puts
      print "    > "
    end

    def die(why)
      puts
      puts "    #{why} #{@quips[rand(@quips.length)]}"
      Process.exit(1)
    end

    def bad_input
      puts <<-TEXT
      Learn to follow instructions!
      TEXT
      return :die
    end

    def home_text
      puts <<-TEXT
      You wake up to the smell of smoke in your room. Jolting up from your bed, you 
      look around the room and see a heavy cloud of smoke covering your ceiling. There
      are piercing sounds of screaming outside, coupled with terrorizing roars and howls.

      TEXT
    end
end

模块级别
def提示符
放
打印“>”
结束
def模具（为什么）
放
放置“{why}{@quips[rand（@quips.length）]”
进程。退出（1）
结束
def坏_输入
将您拥有的
包含？
放入您的代码中。方法是
包含？
（否）

module Levels

    def prompt
      puts
      print "    > "
    end

    def die(why)
      puts
      puts "    #{why} #{@quips[rand(@quips.length)]}"
      Process.exit(1)
    end

    def bad_input
      puts <<-TEXT
      Learn to follow instructions!
      TEXT
      return :die
    end

    def home_text
      puts <<-TEXT
      You wake up to the smell of smoke in your room. Jolting up from your bed, you 
      look around the room and see a heavy cloud of smoke covering your ceiling. There
      are piercing sounds of screaming outside, coupled with terrorizing roars and howls.

      TEXT
    end
end