Discord.js v13中MessageEmbed未定义报错问题求助

安全阿岳

2026-4-28

Fixing MessageEmbed is not defined Error in Your Discord.js Bot

Hey there, let's break down why you're hitting this error and how to fix it right away:

Root Cause of the Error

Looking at your command.js code, you're trying to create a MessageEmbed instance here:

let embed2000 = new MessageEmbed()
  .setDescription("There was an error executing that command.")
  .setColor("BLUE");

But unlike your restart.js file (where you properly imported MessageEmbed), you haven't imported this class in command.js. Node.js can't find the MessageEmbed constructor when running this code, hence the "not defined" error.

Step-by-Step Fix

Add this import line at the top of your command.js file (alongside other Discord.js imports):

const { MessageEmbed } = require('discord.js');

This tells Node.js to pull the MessageEmbed class from the discord.js library, making it available for use throughout the command.js file.

Bonus: Fix Other Potential Bugs in Your Restart Command

While we're troubleshooting, let's patch a couple of small issues in your restart.js code that might cause problems later:

Undefined ID variable:
The line if (interaction.user.id != OWNER_ID || ID) references an undefined ID variable. If you want to allow multiple developers to use the command, define an array of allowed IDs instead:
```
const ALLOWED_DEV_IDS = [OWNER_ID, "another-dev-user-id"];
if (!ALLOWED_DEV_IDS.includes(interaction.user.id)) {
```
Unnecessary token in client.destroy():
The destroy() method doesn't require a token argument. Simplify this line:
```
client.destroy(); // Remove BOT_TOKEN from the parentheses
```
Interaction reply limitation after restart:
Once you call client.destroy(), you won't be able to edit the original interaction reply (the bot loses connection to Discord). Instead, consider sending a final follow-up message before restarting, or skip editing the reply altogether.