有没有一种方法可以将画布缓冲区添加到Discord嵌入附件中？

如何解决有没有一种方法可以将画布缓冲区添加到Discord嵌入附件中？

因此，我基本上想对谁通过格式正确的嵌入服务器的服务器进行欢迎嵌入。由于功能const attachment = new Discord.MessageAttachment(canvas.toBuffer(),'welcome-image.png');，我在画布上处理了图像并将其放入缓冲区，但是当我尝试将附件放入嵌入的附件图像时，失败了。有人可以告诉我如何将自定义处理后的图像添加到嵌入图像吗？

错误

Unhandled promise rejection: DiscordAPIError: Invalid Form Body
embed.image.url: Could not interpret "{'name': 'welcome-image.png'}" as string.
    at RequestHandler.execute (/Users/user/Sviluppo/Discord/bot/node_modules/discord.js/src/rest/RequestHandler.js:170:25)
    at processTicksAndRejections (internal/process/task_queues.js:97:5) {
  method: 'post',path: '/channels/665623291951841380/messages',code: 50035,httpStatus: 400
}

我创建的所有画布代码

// Sends a welcome when a new member join (memo: command to set the IDWelcomeChannel var)
bot.on('guildMemberAdd',async member => {
    const channel = member.guild.channels.cache.find(ch => ch.id === '665623291951841380');
    if (!channel) return;

    const canvas = Canvas.createCanvas(700,250);
    const ctx = canvas.getContext('2d');

    const background = await Canvas.loadImage('./wallpaper-welcome.jpg');
    ctx.drawImage(background,canvas.width,canvas.height);

    ctx.strokeStyle = '#74037b';
    ctx.strokeRect(0,canvas.height);

    // Slightly smaller text placed above the member's display name
    ctx.font = '28px sans-serif';
    ctx.fillStyle = '#ffffff';
    ctx.fillText('Welcome to the server,',canvas.width / 2.5,canvas.height / 3.5);

    // Add an exclamation point here and below
    const applyText = (canvas,text) => {
        const ctx = canvas.getContext('2d');
        let fontSize = 70;
        do {
            // Assign the font to the context and decrement it so it can be measured again
            ctx.font = `${fontSize -= 10}px sans-serif`;
            // Compare pixel width of the text to the canvas minus the approximate avatar size
        } while (ctx.measureText(text).width > canvas.width - 300);
    
        // Return the result to use in the actual canvas
        return ctx.font;
    };
    ctx.font = applyText(canvas,`${member.displayName}!`);
    ctx.fillStyle = '#ffffff';
    ctx.fillText(`${member.displayName}!`,canvas.height / 1.8);

    ctx.beginPath();
    ctx.arc(125,125,100,Math.PI * 2,true);
    ctx.closePath();
    ctx.clip();

    const avatar = await Canvas.loadImage(member.user.displayAvatarURL({ format: 'jpg' }));
    ctx.drawImage(avatar,25,200,200);

    const attachment = new Discord.MessageAttachment(canvas.toBuffer(),'welcome-image.png');

    let wembed = new Discord.MessageEmbed()
        .setAuthor('Welcome there!')
        .setDescription(`Welcome to the server,${member}!,be sure to check out <#661731407789424651> and the rules at <#662584102679085066>. Thanks for being with us! Hope you will have a good time here!`)
        .attachFiles(attachment)
        .setImage(attachment)
    channel.send(wembed);

    //channel.send(`Welcome to the server,be sure to check out`,infoCh,`and the rules at`,rulesCh,`. Thanks for being with us! Hope you will have a good time here!`,attachment);
});