400, no client-id specified

.js

const channels = "ESL_SC2, OgamingSC2, cretetion, freecodecamp, storbeck, habathcx, RobotCaleb, noobs2ninjas";
const end = `https://api.twitch.tv/kraken/streams/channel=${channels}`;

const streams = [];

const myHeaders = new Headers();
myHeaders.append("Client-Id", "lfy14565wb4omezslcd2a3unt3zcv9");
const init = {
  method: 'GET',
  Headers: myHeaders
};
fetch(end, init)
  .then(blob => blob.json())
  .then(data => streams.push(...data));

console.log(streams);

function displayStreams() {

}