Invalid transport

Okay, everything is working but I have another question

		const data = await fetch('https://api.twitch.tv/helix/eventsub/subscriptions', {
			method: 'GET',
			headers: {
				'Client-ID':  clientID,
				'Authorization': 'Bearer ' + auth
			}
		});
		const json = await data.json();
		console.log(json);

I have send this and in callback I got something like that

      status: 'webhook_callback_verification_failed',

So what can I do with it?