Component/Widget/Review.php
public function isReviewOptInError()
    {
        $review = oxNew(\OxidEsales\Eshop\Application\Controller\ReviewController::class);
        return $review->isReviewOptInError();
    }
public function isReviewOptInError()
    {
        $review = oxNew(\OxidEsales\Eshop\Application\Controller\ReviewController::class);
        return $review->isReviewOptInError();
    }
Was there an error for shop side review optin validation?

@return bool