diff --git a/phpstan.neon b/phpstan.neon
index c6bd6c87..f7d5cddf 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,5 @@
 parameters:
-    level: 6
+    level: 7
     paths:
         - src
         - tests
diff --git a/rector.php b/rector.php
index 52463c2c..a01199a1 100644
--- a/rector.php
+++ b/rector.php
@@ -24,6 +24,7 @@
         SwitchNegatedTernaryRector::class,
         DisallowedEmptyRuleFixerRector::class,
         \Rector\Php81\Rector\Array_\FirstClassCallableRector::class,
+        ExplicitBoolCompareRector::class,
     ]);
 
     $rectorConfig->rule(InlineConstructorDefaultToPropertyRector::class);
diff --git a/src/Bootstrap/AbstractBootstrap.php b/src/Bootstrap/AbstractBootstrap.php
index b2530691..4fc68340 100644
--- a/src/Bootstrap/AbstractBootstrap.php
+++ b/src/Bootstrap/AbstractBootstrap.php
@@ -107,9 +107,4 @@ final public function setContainer(ContainerInterface $container): void
     {
         $this->container = $container;
     }
-
-    final protected function getPluginPath(): string
-    {
-        return $this->container->getParameter('kernel.root_dir') . DIRECTORY_SEPARATOR . $this->plugin->getPath();
-    }
 }
diff --git a/src/Bootstrap/Database.php b/src/Bootstrap/Database.php
index 39f02584..62598ce4 100644
--- a/src/Bootstrap/Database.php
+++ b/src/Bootstrap/Database.php
@@ -20,6 +20,7 @@ class Database extends AbstractBootstrap
 
     public function injectServices(): void
     {
+        /* @phpstan-ignore-next-line */
         $this->connection = $this->container->get(Connection::class);
     }
 
diff --git a/src/Bootstrap/PaymentMethods.php b/src/Bootstrap/PaymentMethods.php
index 9a811d03..28304380 100644
--- a/src/Bootstrap/PaymentMethods.php
+++ b/src/Bootstrap/PaymentMethods.php
@@ -67,8 +67,11 @@ class PaymentMethods extends AbstractBootstrap
 
     public function injectServices(): void
     {
+        /* @phpstan-ignore-next-line */
         $this->paymentRepository = $this->container->get('payment_method.repository');
+        /* @phpstan-ignore-next-line */
         $this->paymentMethodDefinition = $this->container->get(PaymentMethodDefinition::class);
+        /* @phpstan-ignore-next-line */
         $this->connection = $this->container->get(Connection::class);
     }
 
diff --git a/src/Bootstrap/PluginConfiguration.php b/src/Bootstrap/PluginConfiguration.php
index 7a300ab0..bf0cfd0e 100644
--- a/src/Bootstrap/PluginConfiguration.php
+++ b/src/Bootstrap/PluginConfiguration.php
@@ -18,6 +18,7 @@ class PluginConfiguration extends AbstractBootstrap
 
     public function injectServices(): void
     {
+        /* @phpstan-ignore-next-line */
         $this->configService = $this->container->get(SystemConfigService::class);
     }
 
diff --git a/src/Components/AdminOrders/Controller/TokenController.php b/src/Components/AdminOrders/Controller/TokenController.php
index 165ee61b..e073dad6 100644
--- a/src/Components/AdminOrders/Controller/TokenController.php
+++ b/src/Components/AdminOrders/Controller/TokenController.php
@@ -61,6 +61,7 @@ public function login(Request $request): Response
             ],
         ], $context);
 
+        /** @var array{scheme: string, host: string, path: ?string} $urlInfo */
         $urlInfo = parse_url((string) $saleChannelDomain->getUrl());
         $routerContext = $this->router->getContext();
         $routerContext
diff --git a/src/Components/Checkout/SalesChannel/HandlePaymentMethodRoute.php b/src/Components/Checkout/SalesChannel/HandlePaymentMethodRoute.php
index 64097b00..418ee369 100644
--- a/src/Components/Checkout/SalesChannel/HandlePaymentMethodRoute.php
+++ b/src/Components/Checkout/SalesChannel/HandlePaymentMethodRoute.php
@@ -50,7 +50,7 @@ public function load(Request $request, SalesChannelContext $context): HandlePaym
             return $this->innerService->load($request, $context);
         }
 
-        $orderId = $request->request->get('orderId');
+        $orderId = $request->request->getAlnum('orderId');
 
         $paymentHandlerIdentifier = null;
         $order = null;
diff --git a/src/Components/DeviceFingerprint/Subscriber/DeviceFingerprintSubscriber.php b/src/Components/DeviceFingerprint/Subscriber/DeviceFingerprintSubscriber.php
index a36307c7..91fa63eb 100644
--- a/src/Components/DeviceFingerprint/Subscriber/DeviceFingerprintSubscriber.php
+++ b/src/Components/DeviceFingerprint/Subscriber/DeviceFingerprintSubscriber.php
@@ -50,11 +50,13 @@ public static function getSubscribedEvents(): array
         ];
     }
 
+    /**
+     * @param BuildEvent<Head> $buildEvent
+     */
     public function onPaymentRequest(BuildEvent $buildEvent): void
     {
         /** @var PaymentRequestData $requestData */
         $requestData = $buildEvent->getRequestData();
-        /** @var Head $head */
         $head = $buildEvent->getBuildData();
 
         $ratepayData = RequestHelper::getRatepayData($requestData->getRequestDataBag());
diff --git a/src/Components/InstallmentCalculator/Controller/InstallmentRoute.php b/src/Components/InstallmentCalculator/Controller/InstallmentRoute.php
index 801b4621..b31cdd8f 100644
--- a/src/Components/InstallmentCalculator/Controller/InstallmentRoute.php
+++ b/src/Components/InstallmentCalculator/Controller/InstallmentRoute.php
@@ -41,9 +41,8 @@ public function __construct(
     ], methods: ['GET'])]
     public function calculateInstallment(Request $request, SalesChannelContext $salesChannelContext, ?string $orderId = null): InstallmentCalculationResponse
     {
-        $type = $request->query->get('type');
-        $value = (int) $request->query->get('value');
-        $value = $value ?: 1; // RATESWSX-186: fix that no "0" values can be provided
+        $type = $request->query->getAlpha('type');
+        $value = $request->query->getInt('value', 1); // RATESWSX-186: fix that no "0" values can be provided
 
         if ($orderId) {
             $order = $this->orderRepository->search(CriteriaHelper::getCriteriaForOrder($orderId), $salesChannelContext->getContext())->first();
diff --git a/src/Components/InstallmentCalculator/Service/InstallmentService.php b/src/Components/InstallmentCalculator/Service/InstallmentService.php
index 603451a6..af815729 100644
--- a/src/Components/InstallmentCalculator/Service/InstallmentService.php
+++ b/src/Components/InstallmentCalculator/Service/InstallmentService.php
@@ -148,7 +148,7 @@ public function calculateInstallmentOffline(InstallmentCalculatorContext $contex
             throw new InstallmentCalculationException('Please verify if the payment method is available.');
         }
 
-        /** @var array{0: InstallmentBuilder, 1: int|float}|array{} $amountBuilders */
+        /** @var array{0: InstallmentBuilder, 1: int|float}[]|array{} $amountBuilders */
         $amountBuilders = [];
 
         foreach ($installmentBuilders as $installmentBuilder) {
diff --git a/src/Components/InstallmentCalculator/Subscriber/BuildPaymentSubscriber.php b/src/Components/InstallmentCalculator/Subscriber/BuildPaymentSubscriber.php
index 62ebf1c0..67e156e7 100644
--- a/src/Components/InstallmentCalculator/Subscriber/BuildPaymentSubscriber.php
+++ b/src/Components/InstallmentCalculator/Subscriber/BuildPaymentSubscriber.php
@@ -13,6 +13,7 @@
 
 use Exception;
 use InvalidArgumentException;
+use JsonException;
 use RatePAY\Model\Request\SubModel\Content\Payment;
 use RatePAY\Model\Request\SubModel\Content\Payment\InstallmentDetails;
 use RatePAY\Model\Request\SubModel\Content\ShoppingBasket;
@@ -52,6 +53,10 @@ public static function getSubscribedEvents(): array
         ];
     }
 
+    /**
+     * @param BuildEvent<Payment> $event
+     * @throws JsonException
+     */
     public function buildPayment(BuildEvent $event): void
     {
         /** @var PaymentRequestData $requestData */
@@ -112,6 +117,10 @@ public function buildPayment(BuildEvent $event): void
         }
     }
 
+    /**
+     * @param BuildEvent<ShoppingBasket> $event
+     * @return BuildEvent<ShoppingBasket>
+     */
     public function buildShoppingBasket(BuildEvent $event): BuildEvent
     {
         /** @var OrderOperationData $requestData */
diff --git a/src/Components/InstallmentCalculator/Subscriber/ProductPageSubscriber.php b/src/Components/InstallmentCalculator/Subscriber/ProductPageSubscriber.php
index a3581490..ea0478d3 100644
--- a/src/Components/InstallmentCalculator/Subscriber/ProductPageSubscriber.php
+++ b/src/Components/InstallmentCalculator/Subscriber/ProductPageSubscriber.php
@@ -49,8 +49,14 @@ public function addRatepayData(ProductPageLoadedEvent $event): void
         }
 
         $billingCountyId = $this->getConfig('BillingCountry');
-        $billingCountry = $this->countryRepository->search(new Criteria([$billingCountyId]), $event->getContext())->first();
         $shippingCountyId = $this->getConfig('ShippingCountry');
+        $paymentMethodId = $this->getConfig('PaymentMethod');
+
+        if (!is_string($billingCountyId) || !is_string($shippingCountyId) || !is_string($paymentMethodId)) {
+            return;
+        }
+
+        $billingCountry = $this->countryRepository->search(new Criteria([$billingCountyId]), $event->getContext())->first();
         $shippingCountry = $this->countryRepository->search(new Criteria([$shippingCountyId]), $event->getContext())->first();
         if (!$billingCountry instanceof CountryEntity || !$shippingCountry instanceof CountryEntity) {
             return;
@@ -58,8 +64,6 @@ public function addRatepayData(ProductPageLoadedEvent $event): void
 
         $currency = $event->getSalesChannelContext()->getCurrency();
 
-        $paymentMethodId = $this->getConfig('PaymentMethod');
-
         $product = $event->getPage()->getProduct();
 
         // this is a little bit tricky. we need to support the following cases: normal price, configurable price, advanced/tier pricing
diff --git a/src/Components/OrderManagement/Service/LineItemFactory.php b/src/Components/OrderManagement/Service/LineItemFactory.php
index 66f63eff..00271682 100644
--- a/src/Components/OrderManagement/Service/LineItemFactory.php
+++ b/src/Components/OrderManagement/Service/LineItemFactory.php
@@ -56,7 +56,7 @@ public function createLineItem(OrderEntity $orderEntity, string $label, float $g
             ->setPayload([])
             ->setPriceDefinition(new QuantityPriceDefinition(
                 $grossAmount,
-                new TaxRuleCollection([new TaxRule($taxRate, 100)]),
+                new TaxRuleCollection([new TaxRule((float) $taxRate, 100)]),
                 1
             ));
         $lineItem->addExtension(OrderConverter::ORIGINAL_ID, new IdStruct($lineItem->getId()));
diff --git a/src/Components/ProfileConfig/Controller/ProfileConfigController.php b/src/Components/ProfileConfig/Controller/ProfileConfigController.php
index 63e367fd..5ea0c7de 100644
--- a/src/Components/ProfileConfig/Controller/ProfileConfigController.php
+++ b/src/Components/ProfileConfig/Controller/ProfileConfigController.php
@@ -32,7 +32,7 @@ public function __construct(
     #[Route(path: '/reload-config', name: 'ratepay.profile.config.reload', methods: ['POST'])]
     public function reloadProfileConfiguration(Request $request): Response
     {
-        if ($id = $request->request->get('id')) {
+        if ($id = $request->request->getAlnum('id')) {
             try {
                 $configs = $this->profileManagement->refreshProfileConfigs([$id]);
                 $profileConfig = $configs->get($id);
diff --git a/src/Components/RatepayApi/Dto/CheckoutOperationInterface.php b/src/Components/RatepayApi/Dto/CheckoutOperationInterface.php
index 49ba6488..d219266a 100644
--- a/src/Components/RatepayApi/Dto/CheckoutOperationInterface.php
+++ b/src/Components/RatepayApi/Dto/CheckoutOperationInterface.php
@@ -11,7 +11,6 @@
 namespace Ratepay\RpayPayments\Components\RatepayApi\Dto;
 
 use Shopware\Core\Checkout\Customer\CustomerEntity;
-use Shopware\Core\Checkout\Order\Aggregate\OrderCustomer\OrderCustomerEntity;
 use Shopware\Core\Framework\Validation\DataBag\DataBag;
 use Shopware\Core\System\SalesChannel\SalesChannelContext;
 
@@ -23,8 +22,5 @@ public function getSalesChannelContext(): SalesChannelContext;
 
     public function getRequestDataBag(): DataBag;
 
-    /**
-     * @return OrderCustomerEntity|CustomerEntity
-     */
-    public function getCustomer();
+    public function getCustomer(): CustomerEntity;
 }
diff --git a/src/Components/RatepayApi/Dto/PaymentRequestData.php b/src/Components/RatepayApi/Dto/PaymentRequestData.php
index 0709cad9..d05b1fef 100644
--- a/src/Components/RatepayApi/Dto/PaymentRequestData.php
+++ b/src/Components/RatepayApi/Dto/PaymentRequestData.php
@@ -11,6 +11,7 @@
 
 namespace Ratepay\RpayPayments\Components\RatepayApi\Dto;
 
+use InvalidArgumentException;
 use Shopware\Core\Checkout\Customer\CustomerEntity;
 use Shopware\Core\Checkout\Order\Aggregate\OrderTransaction\OrderTransactionEntity;
 use Shopware\Core\Checkout\Order\OrderEntity;
@@ -74,8 +75,8 @@ public function getPaymentMethodId(): string
         return $this->getOrder()->getTransactions()->last()->getPaymentMethodId();
     }
 
-    public function getCustomer(): ?CustomerEntity
+    public function getCustomer(): CustomerEntity
     {
-        return $this->getOrder()->getOrderCustomer()->getCustomer();
+        return $this->getOrder()->getOrderCustomer()?->getCustomer() ?: throw new InvalidArgumentException('customer has not been loaded for order');
     }
 }
diff --git a/src/Components/RatepayApi/Event/BuildEvent.php b/src/Components/RatepayApi/Event/BuildEvent.php
index 22878252..7927134a 100644
--- a/src/Components/RatepayApi/Event/BuildEvent.php
+++ b/src/Components/RatepayApi/Event/BuildEvent.php
@@ -11,11 +11,18 @@
 
 namespace Ratepay\RpayPayments\Components\RatepayApi\Event;
 
+use RatePAY\Model\Request\SubModel\AbstractModel;
 use Ratepay\RpayPayments\Components\RatepayApi\Dto\AbstractRequestData;
 use Symfony\Contracts\EventDispatcher\Event;
 
+/**
+ * @template T of AbstractModel
+ */
 class BuildEvent extends Event
 {
+    /**
+     * @param T|null $buildData
+     */
     public function __construct(
         private readonly AbstractRequestData $requestData,
         private readonly ?object $buildData = null
@@ -27,6 +34,9 @@ public function getRequestData(): AbstractRequestData
         return $this->requestData;
     }
 
+    /**
+     * @return T|null
+     */
     public function getBuildData(): ?object
     {
         return $this->buildData;
diff --git a/src/Components/RatepayApi/Factory/AbstractFactory.php b/src/Components/RatepayApi/Factory/AbstractFactory.php
index aeb9d3cb..4bdae100 100644
--- a/src/Components/RatepayApi/Factory/AbstractFactory.php
+++ b/src/Components/RatepayApi/Factory/AbstractFactory.php
@@ -12,10 +12,14 @@
 namespace Ratepay\RpayPayments\Components\RatepayApi\Factory;
 
 use InvalidArgumentException;
+use RatePAY\Model\Request\SubModel\AbstractModel;
 use Ratepay\RpayPayments\Components\RatepayApi\Dto\AbstractRequestData;
 use Ratepay\RpayPayments\Components\RatepayApi\Event\BuildEvent;
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
+/**
+ * @template ReturnType of AbstractModel|null
+ */
 abstract class AbstractFactory
 {
     public function __construct(
@@ -23,6 +27,9 @@ public function __construct(
     ) {
     }
 
+    /**
+     * @return ReturnType
+     */
     final public function getData(AbstractRequestData $requestData): ?object
     {
         if (!$this->isSupported($requestData)) {
@@ -31,8 +38,8 @@ final public function getData(AbstractRequestData $requestData): ?object
 
         $data = $this->_getData($requestData);
         if ($data !== null) {
-            /** @var BuildEvent $event */
-            $event = $this->eventDispatcher->dispatch(new BuildEvent($requestData, $data), static::class);
+            $event = new BuildEvent($requestData, $data);
+            $this->eventDispatcher->dispatch($event, static::class);
             $data = $event->getBuildData();
         }
 
@@ -41,5 +48,8 @@ final public function getData(AbstractRequestData $requestData): ?object
 
     abstract protected function isSupported(AbstractRequestData $requestData): bool;
 
+    /**
+     * @return ReturnType
+     */
     abstract protected function _getData(AbstractRequestData $requestData): ?object;
 }
diff --git a/src/Components/RatepayApi/Factory/CustomerFactory.php b/src/Components/RatepayApi/Factory/CustomerFactory.php
index ff93d3c9..9694e693 100644
--- a/src/Components/RatepayApi/Factory/CustomerFactory.php
+++ b/src/Components/RatepayApi/Factory/CustomerFactory.php
@@ -38,7 +38,7 @@
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 /**
- * @method Customer getData(CheckoutOperationInterface $requestData)
+ * @extends AbstractFactory<Customer>
  */
 class CustomerFactory extends AbstractFactory
 {
@@ -150,7 +150,7 @@ protected function _getData(AbstractRequestData $requestData): ?object
             }
         }
 
-        if ($requestData instanceof PaymentRequestData && $requestDataBag->has('bankData')) {
+        if ($requestDataBag->has('bankData')) {
             /** @var RequestDataBag $bankData */
             $bankData = $requestDataBag->get('bankData');
             $bankAccount = new BankAccount();
diff --git a/src/Components/RatepayApi/Factory/ExternalFactory.php b/src/Components/RatepayApi/Factory/ExternalFactory.php
index b608435d..aeab12ee 100644
--- a/src/Components/RatepayApi/Factory/ExternalFactory.php
+++ b/src/Components/RatepayApi/Factory/ExternalFactory.php
@@ -19,7 +19,7 @@
 use Shopware\Core\Checkout\Order\Aggregate\OrderDelivery\OrderDeliveryEntity;
 
 /**
- * @method External getData(AbstractRequestData $requestData)
+ * @extends AbstractFactory<External>
  */
 class ExternalFactory extends AbstractFactory
 {
diff --git a/src/Components/RatepayApi/Factory/HeadFactory.php b/src/Components/RatepayApi/Factory/HeadFactory.php
index 34dd4bf7..8dfbc7ca 100644
--- a/src/Components/RatepayApi/Factory/HeadFactory.php
+++ b/src/Components/RatepayApi/Factory/HeadFactory.php
@@ -24,7 +24,7 @@
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 /**
- * @method Head getData(AbstractRequestData $requestData)
+ * @extends AbstractFactory<Head>
  */
 class HeadFactory extends AbstractFactory
 {
diff --git a/src/Components/RatepayApi/Factory/InvoiceFactory.php b/src/Components/RatepayApi/Factory/InvoiceFactory.php
index 41ef7a39..1c850109 100644
--- a/src/Components/RatepayApi/Factory/InvoiceFactory.php
+++ b/src/Components/RatepayApi/Factory/InvoiceFactory.php
@@ -17,7 +17,7 @@
 use Shopware\Core\Checkout\Document\DocumentEntity;
 
 /**
- * @method Invoicing getData(AbstractRequestData $requestData)
+ * @extends AbstractFactory<Invoicing|null>
  */
 class InvoiceFactory extends AbstractFactory
 {
diff --git a/src/Components/RatepayApi/Factory/PaymentFactory.php b/src/Components/RatepayApi/Factory/PaymentFactory.php
index 4a969991..0693a972 100644
--- a/src/Components/RatepayApi/Factory/PaymentFactory.php
+++ b/src/Components/RatepayApi/Factory/PaymentFactory.php
@@ -16,7 +16,7 @@
 use Ratepay\RpayPayments\Components\RatepayApi\Dto\PaymentRequestData;
 
 /**
- * @method Payment getData(PaymentRequestData $requestData)
+ * @extends AbstractFactory<Payment>
  */
 class PaymentFactory extends AbstractFactory
 {
diff --git a/src/Components/RatepayApi/Factory/ShoppingBasketFactory.php b/src/Components/RatepayApi/Factory/ShoppingBasketFactory.php
index 6a99893a..7ef70018 100644
--- a/src/Components/RatepayApi/Factory/ShoppingBasketFactory.php
+++ b/src/Components/RatepayApi/Factory/ShoppingBasketFactory.php
@@ -21,7 +21,6 @@
 use Ratepay\RpayPayments\Components\RatepayApi\Dto\AbstractRequestData;
 use Ratepay\RpayPayments\Components\RatepayApi\Dto\OperationDataWithBasket;
 use Ratepay\RpayPayments\Components\RatepayApi\Dto\OrderOperationData;
-use Ratepay\RpayPayments\Components\RatepayApi\Dto\PaymentRequestData;
 use Ratepay\RpayPayments\Components\RatepayApi\Exception\EmptyBasketException;
 use Shopware\Core\Checkout\Cart\LineItem\LineItem;
 use Shopware\Core\Checkout\Cart\Price\Struct\CalculatedPrice;
@@ -30,7 +29,7 @@
 use Shopware\Core\Checkout\Order\Aggregate\OrderLineItem\OrderLineItemEntity;
 
 /**
- * @method ShoppingBasket getData(PaymentRequestData|OrderOperationData $requestData)
+ * @extends AbstractFactory<ShoppingBasket>
  */
 class ShoppingBasketFactory extends AbstractFactory
 {
diff --git a/src/Components/RatepayApi/Service/Request/AbstractRequest.php b/src/Components/RatepayApi/Service/Request/AbstractRequest.php
index bb724f00..43d28c8f 100644
--- a/src/Components/RatepayApi/Service/Request/AbstractRequest.php
+++ b/src/Components/RatepayApi/Service/Request/AbstractRequest.php
@@ -173,8 +173,8 @@ private function _getRequestHead(AbstractRequestData $requestData): Head
     {
         $head = $this->getRequestHead($requestData);
 
-        /** @var BuildEvent $event */
-        $event = $this->eventDispatcher->dispatch(new BuildEvent($requestData, $head), static::class . self::EVENT_BUILD_HEAD);
+        $event = new BuildEvent($requestData, $head);
+        $this->eventDispatcher->dispatch($event, static::class . self::EVENT_BUILD_HEAD);
 
         return $event->getBuildData();
     }
@@ -196,8 +196,8 @@ private function _getRequestContent(AbstractRequestData $requestData): ?Content
     {
         $content = $this->getRequestContent($requestData);
 
-        /** @var BuildEvent $event */
-        $event = $this->eventDispatcher->dispatch(new BuildEvent($requestData, $content), static::class . self::EVENT_BUILD_CONTENT);
+        $event = new BuildEvent($requestData, $content);
+        $this->eventDispatcher->dispatch($event, static::class . self::EVENT_BUILD_CONTENT);
 
         return $event->getBuildData();
     }
diff --git a/src/Components/RedirectException/DependencyInjection/subscriber.xml b/src/Components/RedirectException/DependencyInjection/subscriber.xml
index 8fa616fe..17c166c6 100644
--- a/src/Components/RedirectException/DependencyInjection/subscriber.xml
+++ b/src/Components/RedirectException/DependencyInjection/subscriber.xml
@@ -8,9 +8,8 @@
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
     <services>
-        <service id="Ratepay\RpayPayments\Components\RedirectException\Subscriber\RedirectExceptionListener">
+        <service id="Ratepay\RpayPayments\Components\RedirectException\Subscriber\RedirectExceptionListener" autowire="true">
             <argument type="service" id="service_container"/>
-            <argument type="service" id="Shopware\Core\Checkout\Order\Aggregate\OrderTransaction\OrderTransactionStateHandler"/>
             <tag name="kernel.event_subscriber"/>
         </service>
     </services>
diff --git a/src/Components/RedirectException/Subscriber/RedirectExceptionListener.php b/src/Components/RedirectException/Subscriber/RedirectExceptionListener.php
index 08afac28..4df8db0d 100644
--- a/src/Components/RedirectException/Subscriber/RedirectExceptionListener.php
+++ b/src/Components/RedirectException/Subscriber/RedirectExceptionListener.php
@@ -32,7 +32,9 @@ class RedirectExceptionListener implements EventSubscriberInterface
 {
     public function __construct(
         private readonly ContainerInterface $container,
-        private readonly OrderTransactionStateHandler $orderTransactionStateHandler
+        private readonly OrderTransactionStateHandler $orderTransactionStateHandler,
+        private readonly RequestTransformerInterface $requestTransformer,
+        private readonly HttpKernelInterface $kernel
     ) {
     }
 
@@ -87,7 +89,7 @@ public function onKernelException(ExceptionEvent $event): void
             $router->getContext()->setMethod($method); // reset method
 
             $attributes = array_merge(
-                $this->container->get(RequestTransformerInterface::class)->extractInheritableAttributes($event->getRequest()),
+                $this->requestTransformer->extractInheritableAttributes($event->getRequest()),
                 $route,
                 $throwable->getQueryParams(),
                 [
@@ -96,8 +98,7 @@ public function onKernelException(ExceptionEvent $event): void
             );
             $subRequest = $event->getRequest()->duplicate($route, null, $attributes);
 
-            $response = $this->container->get('http_kernel')
-                ->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
+            $response = $this->kernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
             $event->setResponse($response);
             $event->allowCustomResponseCode();
         }
diff --git a/src/Core/PluginConfigService.php b/src/Core/PluginConfigService.php
index 5334b3b4..b7bb04d6 100644
--- a/src/Core/PluginConfigService.php
+++ b/src/Core/PluginConfigService.php
@@ -35,7 +35,9 @@ public function getDeviceFingerprintSnippetId(): string
 
     public function getPluginConfiguration(): array
     {
-        return $this->systemConfigService->get('RpayPayments.config', null) ?: [];
+        $config = $this->systemConfigService->get('RpayPayments.config', null);
+
+        return is_array($config) ? $config : [];
     }
 
     public function isAutoOperationBasedOnDeliveryStatusEnabled(): bool
diff --git a/src/RpayPayments.php b/src/RpayPayments.php
index 61b24f15..7bb8bbae 100644
--- a/src/RpayPayments.php
+++ b/src/RpayPayments.php
@@ -145,7 +145,7 @@ public function build(ContainerBuilder $containerBuilder): void
         ];
 
         $loader = new XmlFileLoader($containerBuilder, new FileLocator(__DIR__));
-        foreach (array_filter(glob(__DIR__ . '/Components/*'), 'is_dir') as $dir) {
+        foreach (array_filter(array_values(glob(__DIR__ . '/Components/*') ?: []), 'is_dir') as $dir) {
             foreach ($componentContainerFiles as $fileName) {
                 $file = $dir . '/DependencyInjection/' . $fileName;
                 if (file_exists($file)) {
@@ -170,7 +170,12 @@ public function boot(): void
     {
         parent::boot();
 
-        FeatureFlagService::loadFeatureFlags($this->container->get(SystemConfigService::class)->get('RpayPayments.config.featureFlags'));
+        /** @var SystemConfigService $systemConfig */
+        $systemConfig = $this->container->get(SystemConfigService::class);
+        $flags = $systemConfig->get('RpayPayments.config.featureFlags');
+        if (is_string($flags)) {
+            FeatureFlagService::loadFeatureFlags();
+        }
     }
 
     /**