avatar code v12 with avatar server

client.on("message", async message => {
    let command = message.content.toLowerCase().split(" ")[0]
    command = command.slice(prefix.length)
    if (command == "avatar") {
        let args = message.content.split(" ")
        let user = message.mentions.users.first() || client.users.cache.find(u => u.id === args[1]) || message.author
        if (args[1] !== "server") {
            message.channel.send(
                new Discord.MessageEmbed()
                .setAuthor(user.username, user.avatarURL())
                .setDescription(`**[Avatar Link](${user.avatarURL()})**`)
                .setImage(user.avatarURL({
                    dynamic: true,
                    format: 'png',
                    size: 1024
                }))
                .setFooter(client.user.username, client.user.avatarURL({ dynamic: true }))
            );
        } else if (args[1] === "server") {
            message.channel.send(
                new Discord.MessageEmbed()
                .setAuthor(message.guild.name, message.guild.iconURL({ dynamic: true }))
                .setDescription(`**[Avatar Link](${message.guild.iconURL({ dynamic: true })})**`)
                .setImage(message.guild.iconURL({
                    dynamic: true,
                    format: 'png',
                    size: 1024
                }))
                .setFooter(client.user.username, client.user.avatarURL({ dynamic: true }))
            );
        }
    }
});