CakeDC\Users\Controller\Component\UsersAuthComponent::_validateConfig PHP Method

    protected function _validateConfig()
    {
        if (!Configure::read('Users.Email.required') && Configure::read('Users.Email.validate')) {
            $message = __d('CakeDC/Users', 'You can\'t enable email validation workflow if use_email is false');
            throw new BadConfigurationException($message);
        }
    }