diff --git a/composer.json b/composer.json
index 5f74e39..3564536 100644
--- a/composer.json
+++ b/composer.json
@@ -12,15 +12,15 @@
     ],
     "require": {
         "php": "^8.0",
-        "symfony/framework-bundle": "^6.0 | ^7.0",
+        "symfony/framework-bundle": "^6.0 | ^7.0 | ^8.0",
         "symfony/orm-pack": "^2.3",
         "twig/twig": "^3.0",
-        "symfony/yaml": "^6.0 | ^7.0",
-        "symfony/asset": "^6.0 | ^7.0",
-        "symfony/console": "^6.0 | ^7.0",
-        "symfony/http-foundation": "^6.0 | ^7.0",
-        "symfony/http-kernel": "^6.0 | ^7.0",
-        "symfony/dependency-injection": "^6.0 | ^7.0"
+        "symfony/yaml": "^6.0 | ^7.0 | ^8.0",
+        "symfony/asset": "^6.0 | ^7.0 | ^8.0",
+        "symfony/console": "^6.0 | ^7.0 | ^8.0",
+        "symfony/http-foundation": "^6.0 | ^7.0 | ^8.0",
+        "symfony/http-kernel": "^6.0 | ^7.0 | ^8.0",
+        "symfony/dependency-injection": "^6.0 | ^7.0 | ^8.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Controller/CookieConsentController.php b/src/Controller/CookieConsentController.php
index aebb6d2..e241220 100644
--- a/src/Controller/CookieConsentController.php
+++ b/src/Controller/CookieConsentController.php
@@ -5,7 +5,7 @@
 use Exception;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\Routing\Attribute\Route;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Eveltic\CookieBundle\Service\CookieConsentService;
diff --git a/src/Service/CookieConsentService.php b/src/Service/CookieConsentService.php
index 140fcc8..b1a00d3 100644
--- a/src/Service/CookieConsentService.php
+++ b/src/Service/CookieConsentService.php
@@ -112,11 +112,14 @@ public function isConsentGiven(): bool
     {
         $consentData = $this->getConsentCookie();
 
+        if (!isset($consentData['expiration'], $consentData['version'])) {
+            return false;
+        }
+
         $currentDate = new DateTime();
-        $expirationDate = (new DateTime())->setTimestamp(strtotime($consentData['expiration']??null));
-        
-        if (isset($consentData['version']) && 
-            $consentData['version'] === $this->currentVersion && 
+        $expirationDate = (new DateTime())->setTimestamp((int) strtotime($consentData['expiration']));
+
+        if ($consentData['version'] === $this->currentVersion &&
             $expirationDate > $currentDate) {
             return true;
         }
@@ -171,7 +174,12 @@ public function getConsentCookie(): ?array
         $request = $this->requestStack->getCurrentRequest();
 
         // Get the value of the consent cookie using the defined cookie name.
-        $cookieValue = $request->cookies->get(self::COOKIE_NAME, null);
+        $cookieValue = $request?->cookies->get(self::COOKIE_NAME);
+
+        // No consent cookie present yet — nothing to decode.
+        if (!is_string($cookieValue) || '' === $cookieValue) {
+            return $this->cachedConsentCookie = null;
+        }
 
         // Decode the JSON-encoded cookie value into an associative array.
         try {