Discord Reaction Role

//This command gives the User the "Member-Role" and removes the "Guest-Role"
//Also only Admins can run this code

module.exports = {
    name: 'member',
    description: "Sets up a reaction role message!",
    async execute(message, args, Discord, client) {
        const channel = '_ChannelID_';
        const yellowTeamRole = message.guild.roles.cache.find(role => role.name === "Member");
        const blueTeamRole = message.guild.roles.cache.find(role => role.name === "Gast");

        const yellowTeamEmoji = '☑️';
			//You can only run the command if you re admin
            if(message.member.permissions.has("ADMINISTRATOR")){

                let embed = new Discord.MessageEmbed()
                    .setColor('#5673f0')
                    .setTitle('Verifizierung')
                    .setDescription('Use ☑️ to get Member-Rank\n'
                    +'INSERT TEXT HERE\n\n')
                    .setTimestamp();

                let messageEmbed = await message.channel.send(embed);
                messageEmbed.react(yellowTeamEmoji);

                client.on('messageReactionAdd', async (reaction, user) => {
                    if (reaction.message.partial) await reaction.message.fetch();
                    if (reaction.partial) await reaction.fetch();
                    if (user.bot) return;
                    if (!reaction.message.guild) return;

                    if (reaction.message.channel.id == channel) {
                        if (reaction.emoji.name === yellowTeamEmoji) {
                            await reaction.message.guild.members.cache.get(user.id).roles.add(yellowTeamRole);
                            await reaction.message.guild.members.cache.get(user.id).roles.remove(blueTeamRole);
                        }
                    } else {
                        return;
                    }

                });

                client.on('messageReactionRemove', async (reaction, user) => {

                    if (reaction.message.partial) await reaction.message.fetch();
                    if (reaction.partial) await reaction.fetch();
                    if (user.bot) return;
                    if (!reaction.message.guild) return;


                    if (reaction.message.channel.id == channel) {
                        if (reaction.emoji.name === yellowTeamEmoji) {
                            await reaction.message.guild.members.cache.get(user.id).roles.remove(yellowTeamRole);
                            await reaction.message.guild.members.cache.get(user.id).roles.add(blueTeamRole);
                        }

                    } else {
                        return;
                    }
                });
            } else(message.reply("You have no permissions!"));
    }

}