小编Dmi*_*kov的帖子

如何找到我的计算机上第一个开放的 HTTP 端口，并启动在其上运行的 Flask 服务器？

我将像这样运行该应用程序：

app.run(port=first_open_port, host='0.0.0.0')

我正在开发一个 Discord 机器人，最近一直在阅读 API。我想为我的机器人添加一个命令，该命令将完全清除文本频道，并且只允许具有管理消息权限的人。

到目前为止，这是我的代码：

client.on('message', function(message) {
    if (message.content == "^clear") {
        try {
            if (message.member.hasPermission("MANAGE_MESSAGES")) {
                messages = message.channel.fetchMessages();
                message.channel.bulkDelete(messages);
            }
        } catch(e) {
            message.channel.send("ERROR: ERROR CLEARING CHANNEL.");
            console.log(e);
        }
    }

});

我收到一个错误，如下所示：

TypeError: The messages must be an Array, Collection, or number.
at TextChannel.bulkDelete (/Users/person/bot/node_modules/discord.js/src/structures/interfaces/TextBasedChannel.js:379:11)
at Client.<anonymous> (/Users/person/bpt/bot.js:29:33)
at emitOne (events.js:96:13)
at Client.emit (events.js:188:7)
at MessageCreateHandler.handle (/Users/person/bot/node_modules/discord.js/src/client/websocket/packets/handlers/MessageCreate.js:9:34)
at WebSocketPacketManager.handle (/Users/person/bot/node_modules/discord.js/src/client/websocket/packets/WebSocketPacketManager.js:102:65)
at WebSocketConnection.onPacket (/Users/person/bot/node_modules/discord.js/src/client/websocket/WebSocketConnection.js:325:35)
at WebSocketConnection.onMessage (/Users/person/bot/node_modules/discord.js/src/client/websocket/WebSocketConnection.js:288:17)
at WebSocket.onMessage (/Users/person/bot/node_modules/discord.js/node_modules/ws/lib/EventTarget.js:103:16)
at emitTwo (events.js:106:13)