TypeError: fetch failed

[sahil432]

I m getting error message

client id and secret key is correct

[marthinal]

Try using this option. I had a 401:
See ClientCredentialsGrant.php

if (!$client->isConfidential()) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));

            throw OAuthServerException::invalidClient($request);
}

[cristinallamas]

I have the same issue. I have followed the tutorial to the T, but there's this error lib/drupal.ts and there's no help in the docs or the github page