UnhandledPromiseRejectionWarning：TypeError：无法读取 null 的属性

Question

const addReactions = (message, reactions) => {
    message.react(reactions[0])
    reactions.shift()
    if(reactions.length > 0) {
        setTimeout(() => addReactions(message, reactions), 750)
    }
}

module.exports = async (client, id, text, reactions = []) => {
  const channel = await client.channels.fetch(id);

  channel.messages.fetch().then((messages) => {
      if(messages.size === 0) {
          //Send a new messages
        channel.send(text).then(message => {
            addReactions(message, reactions)
        })
    }else{
        //Edit the existing message

      }
  })
}

所以我得到了这个错误：

PS D:\Raketbot> node index.js
(node:7712) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'messages' of null
    at module.exports (D:\Raketbot\first-message.js:13:11)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
etc....

Answer 1

问题是您没有从“await client.channels.fetch(id)”接收通道对象。 验证您是否正确调用它。