FatalErrorException: Error: Call to undefined method Sylius\Component\Core\Model\UserOAuth::getRoles() in /Users/warrenlee/Sites/sylius/vendor/hwi/oauth-bundle/HWI/Bundle/OAuthBundle/Security/Core/Authentication/Provider/OAuthProvider.php line 84

Sylius\Bundle\CoreBundle\OAuth\UserProvider

public function loadUserByOAuthUserResponse(UserResponseInterface $response)
    {
        $user = $this->oauthRepository->findOneBy(array(
            'provider'   => $response->getResourceOwner()->getName(),
            'identifier' => $response->getUsername()
        ));

        if (null !== $user) {
            return $user;   // Error here!
        }

        if (null !== $response->getEmail()) {
            $user = $this->userManager->findUserByEmail($response->getEmail());
            if (null !== $user) {
                return $this->updateUserByOAuthUserResponse($user, $response);
            }
        }

        return $this->createUserByOAuthUserResponse($response);
    }