if (message.content.toLowerCase().startsWith('yavatar'))  {
  let user = message.mentions.members.size > 0 ? message.mentions.members.first()  : message.author;
  message.channel.send({
    embed: {
      title: `${user.username}`,
      image: {
        url: user.displayAvatarURL
      },
      footer: {
    }
  }
});