SyntaxError: Identifier 'client' has already been declared

 const Discord = require('discord.js');
const { config } = require('process');
const client = new Discord.Client();
const token = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"

client.once('ready', () => {
   console.log('connected');
});

client.login(token);

// fix le prefix et les id de ceux qui peuvent use le bot 

const { CommandoClient } = require('discord.js-commando');

const client = new CommandoClient({
	commandPrefix: '^',
	owner: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
        disableMentions: 'everyone','here'
});

client.registry
    .registerDefaultTypes()
    .registerGroups([])
;
client.once('ready', () => {
    console.log(`Je suis prêt !`);
});

client.on('error', console.error); // Afficher les erreurs

client.login('XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX');

owner: '241217814696820736','241217814696820736',
        disableMentions: 'everyone','here'
});