I trying to make list command to list the stored data for this code , I tried a lot but it doesn't work for me,
client.on("message", message=>{
if(!message.guild)return;
if(message.content.startsWith(prefix + "add")){
let user = message.mentions.users.first()
if(!user) return message.channel.send('**:x: You have to mention someone first.**')
if(db.fetch(`owner_${user.id}`)) return message.channel.send("**This user is already exists**")
db.set(`owner_${user.id}`, true)
message.channel.send(new Discord.MessageEmbed().setColor('#4C6E70').setDescription(`**${user} Done.**`)).then(async msg => {
msg.react("✅")
})
}
}
});