diff --git a/src/bundle/Resources/config/default_settings.yaml b/src/bundle/Resources/config/default_settings.yaml
index 7c1e87d..65aef8c 100644
--- a/src/bundle/Resources/config/default_settings.yaml
+++ b/src/bundle/Resources/config/default_settings.yaml
@@ -4,7 +4,7 @@ parameters:
   ibexa.graphql.schema.content.mapping.field_definition_type:
     ezauthor:
       value_type: "[AuthorFieldValue]"
-      value_resolver: 'field.authors'
+      value_resolver: 'field !== null ? field.authors : null'
       input_type: '[AuthorInput]'
     ezbinaryfile:
       definition_type: BinaryFieldDefinition
@@ -13,7 +13,7 @@ parameters:
     ezboolean:
       definition_type: CheckboxFieldDefinition
       value_type: Boolean
-      value_resolver: 'field.bool'
+      value_resolver: 'field !== null ? field.bool : null'
       input_type: Boolean
     ezcountry:
       definition_type: CountryFieldDefinition
@@ -21,11 +21,11 @@ parameters:
       input_type: '[String]'
     ezdate:
       value_type: DateTime
-      value_resolver: 'field.date'
+      value_resolver: 'field !== null ? field.date : null'
       input_type: DateFieldInput
     ezdatetime:
       value_type: DateTime
-      value_resolver: 'field.value'
+      value_resolver: 'field !== null ? field.value : null'
       input_type: DateFieldInput
     ezemail:
       value_type: String
@@ -35,7 +35,7 @@ parameters:
     ezfloat:
       definition_type: FloatFieldDefinition
       value_type: Float
-      value_resolver: 'field.value'
+      value_resolver: 'field !== null ? field.value : null'
       input_type: Float
     ezgmaplocation:
       value_type: MapLocationFieldValue
@@ -50,11 +50,11 @@ parameters:
     ezinteger:
       definition_type: IntegerFieldDefinition
       value_type: Int
-      value_resolver: 'field.value'
+      value_resolver: 'field !== null ? field.value : null'
       input_type: Int
     ezkeyword:
       value_type: '[String]'
-      value_resolver: 'field.values'
+      value_resolver: 'field !== null ? field.values : null'
       input_type: '[String]'
     ezmedia:
       definition_type: MediaFieldDefinition
diff --git a/src/lib/Resolver/DomainContentResolver.php b/src/lib/Resolver/DomainContentResolver.php
index c50b0b8..373f4cd 100644
--- a/src/lib/Resolver/DomainContentResolver.php
+++ b/src/lib/Resolver/DomainContentResolver.php
@@ -139,8 +139,12 @@ public function resolveDomainFieldValue(Content $content, $fieldDefinitionIdenti
         return Field::fromField($content->getField($fieldDefinitionIdentifier, $args['language'] ?? null));
     }
 
-    public function resolveDomainRelationFieldValue(Field $field, $multiple = false)
+    public function resolveDomainRelationFieldValue(?Field $field, $multiple = false)
     {
+        if ($field === null) {
+            return null;
+        }
+
         $destinationContentIds = $this->getContentIds($field);
 
         if (empty($destinationContentIds) || array_key_exists(0, $destinationContentIds) && null === $destinationContentIds[0]) {
diff --git a/src/lib/Resolver/ImageAssetFieldResolver.php b/src/lib/Resolver/ImageAssetFieldResolver.php
index 6d88dd3..4fed64e 100644
--- a/src/lib/Resolver/ImageAssetFieldResolver.php
+++ b/src/lib/Resolver/ImageAssetFieldResolver.php
@@ -29,8 +29,12 @@ public function __construct(iterable $strategies)
         }
     }
 
-    public function resolveDomainImageAssetFieldValue(Field $field): ?Field
+    public function resolveDomainImageAssetFieldValue(?Field $field): ?Field
     {
+        if ($field === null) {
+            return null;
+        }
+
         $destinationContentId = $field->value->destinationContentId;
 
         if ($destinationContentId === null) {
diff --git a/src/lib/Resolver/SelectionFieldResolver.php b/src/lib/Resolver/SelectionFieldResolver.php
index 4925bbe..ac861a7 100644
--- a/src/lib/Resolver/SelectionFieldResolver.php
+++ b/src/lib/Resolver/SelectionFieldResolver.php
@@ -27,8 +27,12 @@ public function __construct(
         $this->contentTypeLoader = $contentTypeLoader;
     }
 
-    public function resolveSelectionFieldValue(Field $field, Content $content)
+    public function resolveSelectionFieldValue(?Field $field, Content $content)
     {
+        if ($field === null) {
+            return null;
+        }
+
         $fieldDefinition = $this
             ->contentTypeLoader->load($content->contentInfo->contentTypeId)
             ->getFieldDefinition($field->fieldDefIdentifier);