json - 运行bot2.js时不断出错

Question

我是新手，我不明白这个错误中的内容

当我输入时，节点 bot2.js

我收到此错误消息：

ReferenceError: bot2 is not defined
    at repl:1:1
    at REPLServer.defaultEval (repl.js:132:27)
    at bound (domain.js:291:14)
    at REPLServer.runBound [as eval] (domain.js:304:12)
    at REPLServer.<anonymous> (repl.js:279:12)
    at REPLServer.emit (events.js:107:17)
    at REPLServer.Interface._onLine (readline.js:214:10)
    at REPLServer.Interface._line (readline.js:553:8)
    at REPLServer.Interface._ttyWrite (readline.js:830:14)
    at ReadStream.onkeypress (readline.js:109:10)

谁能帮我翻译一下或者解释我做错了什么或者我是否需要下载一些东西？

谢谢