writeto error

    bot.mutes[toMute.id] = {
        guild: message.guild.id,
        time: Date.now() + parseInt(args[1]) * 1000
    }

    await toMute.addRole(role);

    await fs.writeFile("../mutes.json", JSON.stringify(bot.mutes, null, 4), err => {
        if(err) throw err;
        message.channel.send("I Have Muted " + toMute + " For " + args[1] + " Seconds!");
        modlog.send(`\`${toMute.user.username}\` Was Muted For \`${args[1]}\` Seconds. By \`${message.author.username}\`!`);
        bot.users.get(toMute.id).send(`You Have Been Muted On ${message.guild.name} Discord Server For ${args[1]} Seconds!`);
        console.log(`I Have Added ${toMute.user.tag} To mutes.json.`);
        console.log("Mute Command Completed!");
        console.log(" ");
    });