Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalThrowableError: "Call to a member
  function getDelivery() on bool" at
  /Users/xx/web/EC/onlineshop/app/Plugin/EccubePaymentLite4/Service/PurchaseFlow/Processor/MemberCheckForRegularPurchaseValidator.php
  line 47

46:        // 定期商品ではない場合は処理をスキップ
47:        if ($Order->getShippings()->first()->getDelivery()->getSaleType()->getName() !== '定期商品') {
48:            return;
49:        }

        /**
         * Get shippings.
         *
         * @return \Doctrine\Common\Collections\Collection|\Eccube\Entity\Shipping[]
         */
        public function getShippings()
        {
            $criteria = Criteria::create()
            ->orderBy(['name01' => Criteria::ASC, 'name02' => Criteria::ASC, 'id' => Criteria::ASC]);

            return $this->Shippings->matching($criteria);
        }