JWT Maximum execution time of 30 seconds exceeded in brick/math/src/Internal/Calculator/NativeCalculator.php on line 322

Question

I am trying to produce a JWT from the instructions on this site https://web-token.spomky-labs.com.

All dependencies that I know of have been installed. My code is below. I get the 30 sec time out. What's missing? The RSA key was generated on 8x8 website. Even if I generate my own key. I get the same 30 sec time out.

use Jose\Component\Core\AlgorithmManager;
use Jose\Component\Signature\Algorithm\RS256;
use Jose\Component\Signature\JWSBuilder;
use Jose\Component\KeyManagement\JWKFactory;

// The algorithm manager with the HS256 algorithm.
$algorithmManager = new AlgorithmManager([
    new RS256(),
]);

// Our key.
$keyFile = dirname(__FILE__, 6) . "/sites/RsaPrivateKey.pk";
$contents = file_get_contents($keyFile);

$jwk = JWKFactory::createFromKeyFile(
    $keyFile,
    '',
    [
     'use' => 'sig',
     ]
);

// We instantiate our JWS Builder.
$jwsBuilder = new JWSBuilder($algorithmManager);

// The payload we want to sign. The payload MUST be a string hence we use our JSON Converter.
$payload = json_encode([
    'iat' => time(),
    'nbf' => time(),
    'exp' => time() + 3600,
    'iss' => 'My service',
    'aud' => 'Your application',
]);
//Never makes it to here
$jws = $jwsBuilder
    ->create()                               // We want to create a new JWS
    ->withPayload($payload)                  // We set the payload
    ->addSignature($jwk, ['alg' => 'RS256']) // We add a signature with a simple protected header
    ->build();                               // We build it