oauthexception.php

См. документацию.

<?
namespace Bitrix\Rest;
 
class OAuthException
    extends RestException
{
    protected $result;

    public function __construct($oauthResult, \Exception $previous = null)
    {
        $this->result = $oauthResult;
 
        parent::__construct(
            $this->result['error_description'] ?? '',
            static::ERROR_OAUTH,
            isset($oauthResult["error_status"])
                ? $oauthResult["error_status"]
                : \CRestServer::STATUS_UNAUTHORIZED,
            $previous
        );
 
        if(isset($oauthResult['additional']) && is_array($oauthResult['additional']))
        {
            $this->setAdditional($oauthResult['additional']);
        }
    }
 
    public function getErrorCode()
    {
        return $this->result['error'];
    }
}
?>