我在输入 node 时遇到了这个错误。启动程序。如果这是一个愚蠢的问题,我很抱歉,但我刚刚开始编码。我的代码有什么问题?这是一个不和谐的机器人,我在网上没有看到任何关于这个问题的信息。const discord = require ('discord.js');var client = new discord.Client();const token = 'E440dqHpTt1qTHw4iWB3VgXit7_tcUd4';client.on ("ready"), () => { console.log ("ready!"); client.user.setGame ("prefix tb")};const prefix = "tb"client.on ('message', function(message) { if (message.author.bot) return; if (message.content.startsWith (prefix + "hello")) { message.reply ("Hi! What's up?"); }});client.login (token);我以为机器人会启动,但我得到了这个: throw new errors.ERR_INVALID_ARG_TYPE('listener', 'Function', listener); ^TypeError [ERR_INVALID_ARG_TYPE]: The "listener" argument must be of type Function. Received type undefined at checkListener (events.js:54:11) at _addListener (events.js:205:3) at Client.addListener (events.js:263:10) at Object.<anonymous> (E:\Discord Bots\tylerbot\tylerbot.js:7:8) at Module._compile (internal/modules/cjs/loader.js:701:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10) at Module.load (internal/modules/cjs/loader.js:600:32) at tryModuleLoad (internal/modules/cjs/loader.js:539:12) at Function.Module._load (internal/modules/cjs/loader.js:531:3) at Function.Module.runMain (internal/modules/cjs/loader.js:754:12)
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