JS mute not working

          if(command === 'mute'){
                if(message.member.hasPermission("MUTE_MEMBERS")){

                    let person = message.guild.member(message.mentions.users.first()) || message.guild.members.get(args[1])

                    if (!person) return message.reply('user not found!');

                    let mainrole = message.guild.roles.find(role => role.name == 'Verified')
                    let muterole = message.guild.roles.find(role => role.name == 'Muted')
                    let time = args[1];

                    if (mainrole){
                        message.guild.defaultRole.setPermissions(0);
                    }

                    if (!mute){
                        message.channel.send('Missing mute role in guild, creating role now!')
                        console.log('Making mute role.');
                        message.guild.createRole({
                            name: 'Muted',
                            color: 'GREY',
                            permissions: ['VIEW_CHANNEL', 'READ_MESSAGES', 'READ_MESSAGE_HISTORY']

                        }).then(role => console.log(`Created ${role.name} role for ${message.guild.name}`)).catch(console.error);
                        message.channel.send('Mute role created!\n Retype command to mute user!')
                    }else
                    if(!time){
                        return message.reply('please enter a time to mute the user for!')
                    }

                    person.removeRole(mainrole);
                    person.addRole(muterole);

                    message.channel.send(`@${person.user.username} has been muted for ${ms(ms(time))}`);
                    setTimeout(function (){
                        person.addRole(mainrole);
                        person.removeRole(muterole);
                        message.channel.send(`@${person.user.username} has been unmuted!`)
                    }, ms(time));

                }else{
                    message.reply('you need the mute members permission to use that command!')
                }
            }