Connection to channel is undefined

[AymenBerb]

// Require the necessary discord.js classes
const { Client, GatewayIntentBits } = require('discord.js');
const { token, clientId } = require('./config.json');

// Create a new client instance
const client = new Client({ 

	intents: [
		GatewayIntentBits.Guilds,
		GatewayIntentBits.GuildMessages,
	],
});

// When the client is ready, run this code (only once)
client.once('ready', () => { 
	console.log('Ready !');
	
	const ch = client.channels.cache.get('1015628629226573887').send('Hello Here !');
	console.log(ch);
	
});

// Login to Discord with your client's token
client.login(token);

The error displayed is: Cannot read properties of undefined (reading 'send')

The clientId variable is correct.

[almostSouji]

Then that channel is not in that client's cache (would suggest you have no bot on that server - just slash application is not enough in that case, probably prefer a webhook) at the time this executes at.

Which further boils down to: probably not the right ID, or bot for that channel