Java Script 'member is not defined' hatası

client.on('message', message => {
    if (message.content.toLowerCase() === 'k!test') {
      const kanal = new MessageEmbed()

      .setTitle(`${message.author.username}`)
      .setColor("GREEN")
      .setThumbnail(`${message.author.avatarURL}`)
      .addField("Username :", `${message.author.username}`, inline = true)
      .addField("Roles:", member.roles.map(roles => `${roles}`).join(','), true)
      .addField("Joined The Server On:", `${moment.utc(member.joinedAt).format("dddd, MMMM Do YYYY")}`, true)
      .addField('new commands will be added', 'keep using!');
      message.channel.send(kanal);
    }
  });

'member is not defined'  hatasını veriyor şu satırda bir hata var;
.addField("Roles:", member.roles.map(roles => `${roles}`).join(','), true)