diff --git a/src/Bundle/ChillDocStoreBundle/Form/DataTransformer/StoredObjectDataTransformer.php b/src/Bundle/ChillDocStoreBundle/Form/DataTransformer/StoredObjectDataTransformer.php
index dfa1b6d4e..520b644b3 100644
--- a/src/Bundle/ChillDocStoreBundle/Form/DataTransformer/StoredObjectDataTransformer.php
+++ b/src/Bundle/ChillDocStoreBundle/Form/DataTransformer/StoredObjectDataTransformer.php
@@ -20,7 +20,7 @@ use Symfony\Component\Serializer\SerializerInterface;
 class StoredObjectDataTransformer implements DataTransformerInterface
 {
     public function __construct(
-        private SerializerInterface $serializer
+        private readonly SerializerInterface $serializer
     ) {
     }
 
@@ -47,6 +47,6 @@ class StoredObjectDataTransformer implements DataTransformerInterface
             return null;
         }
 
-        return json_decode($value, true, 10, JSON_THROW_ON_ERROR);
+        return json_decode((string) $value, true, 10, JSON_THROW_ON_ERROR);
     }
 }
diff --git a/src/Bundle/ChillDocStoreBundle/Serializer/Normalizer/StoredObjectNormalizer.php b/src/Bundle/ChillDocStoreBundle/Serializer/Normalizer/StoredObjectNormalizer.php
index 1b00cc447..83bc85a9b 100644
--- a/src/Bundle/ChillDocStoreBundle/Serializer/Normalizer/StoredObjectNormalizer.php
+++ b/src/Bundle/ChillDocStoreBundle/Serializer/Normalizer/StoredObjectNormalizer.php
@@ -56,8 +56,8 @@ final class StoredObjectNormalizer implements NormalizerInterface, NormalizerAwa
         // deprecated property
         $datas['creationDate'] = $datas['createdAt'];
 
-        $canDavSee = in_array(self::ADD_DAV_SEE_LINK_CONTEXT, $context['groups'] ?? []);
-        $canDavEdit = in_array(self::ADD_DAV_EDIT_LINK_CONTEXT, $context['groups'] ?? []);
+        $canDavSee = in_array(self::ADD_DAV_SEE_LINK_CONTEXT, $context['groups'] ?? [], true);
+        $canDavEdit = in_array(self::ADD_DAV_EDIT_LINK_CONTEXT, $context['groups'] ?? [], true);
 
         if ($canDavSee || $canDavEdit) {
             $accessToken = $this->JWTDavTokenProvider->createToken(