我最近一直在制作一個(gè)自動(dòng)審核機(jī)器人。我規(guī)定如果此人收到 30 次警告，該人將被禁止。但它卻向我展示了一個(gè)錯(cuò)誤。我試圖自己修復(fù)它，但不知道問(wèn)題出在哪里。這是我使用的代碼：if (warns.warns.length === 30 && message.member.bannable) { embed.addField(  `? ${message.author.tag} has reached 30 warnings.`,  `**${message.author} has been banned permanently.**`,  true ); setTimeout(function() {  message.member   .send(banemb)   .then((message) => message.member.ban({ reason: '30 warnings' })); }, 1000);}這是我得到的錯(cuò)誤：{  "stack": "TypeError: Cannot read property 'ban' of nullat /app/app.js:157:51    at processTicksAndRejections (internal/process/task_queues.js:88:5)"}