diff --git a/config/services.yaml b/config/services.yaml
index 146ac71e..df74c644 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -92,6 +92,11 @@ services:
         tags:
             - name: doctrine.orm.entity_listener
 
+    # Dont use JSONSerializable Interface,
+    serializer.normalizer.json_serializable:
+        class: Symfony\Component\Serializer\Normalizer\JsonSerializableNormalizer
+        tags:
+          - {name: serializer.normalizer, priority: -9000}
 
     App\Controller\RedirectController:
         arguments:
diff --git a/src/Controller/AdminPages/BaseAdminController.php b/src/Controller/AdminPages/BaseAdminController.php
index 5590e44b..5542dbe5 100644
--- a/src/Controller/AdminPages/BaseAdminController.php
+++ b/src/Controller/AdminPages/BaseAdminController.php
@@ -152,6 +152,7 @@ abstract class BaseAdminController extends AbstractController
             'entity' => $entity,
             'form' => $form->createView(),
             'attachment_helper' => $this->attachmentHelper,
+            'route_base' => $this->route_base,
         ]);
     }
 
@@ -264,6 +265,7 @@ abstract class BaseAdminController extends AbstractController
             'import_form' => $import_form->createView(),
             'mass_creation_form' => $mass_creation_form->createView(),
             'attachment_helper' => $this->attachmentHelper,
+            'route_base' => $this->route_base,
         ]);
     }
 
diff --git a/src/Entity/Parts/Part.php b/src/Entity/Parts/Part.php
index 61c08672..a94fa37f 100644
--- a/src/Entity/Parts/Part.php
+++ b/src/Entity/Parts/Part.php
@@ -85,7 +85,7 @@ class Part extends AttachmentContainingDBElement
     /**
      * TODO.
      */
-    protected $devices;
+    protected $devices = [];
 
     /**
      * @ColumnSecurity(type="datetime")
diff --git a/src/Services/EntityExporter.php b/src/Services/EntityExporter.php
index 0b9d0d20..d55e09ba 100644
--- a/src/Services/EntityExporter.php
+++ b/src/Services/EntityExporter.php
@@ -43,6 +43,14 @@ declare(strict_types=1);
 namespace App\Services;
 
 use App\Entity\Base\AbstractNamedDBElement;
+use Symfony\Component\Serializer\Encoder\CsvEncoder;
+use Symfony\Component\Serializer\Encoder\JsonEncoder;
+use Symfony\Component\Serializer\Encoder\XmlEncoder;
+use Symfony\Component\Serializer\Encoder\YamlEncoder;
+use Symfony\Component\Serializer\Normalizer\DataUriNormalizer;
+use Symfony\Component\Serializer\Normalizer\DateTimeNormalizer;
+use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
+use Symfony\Component\Serializer\Serializer;
 use function in_array;
 use InvalidArgumentException;
 use function is_array;
@@ -62,6 +70,10 @@ class EntityExporter
 
     public function __construct(SerializerInterface $serializer)
     {
+        /*$encoders = [new XmlEncoder(), new JsonEncoder(), new CSVEncoder(), new YamlEncoder()];
+        $normalizers = [new ObjectNormalizer(), new DateTimeNormalizer()];
+        $this->serializer = new Serializer($normalizers, $encoders);
+        $this->serializer-> */
         $this->serializer = $serializer;
     }
 
@@ -120,13 +132,15 @@ class EntityExporter
             $entity_array = [$entity];
         }
 
-        $response = new Response($this->serializer->serialize($entity_array, $format,
-            [
-                'groups' => $groups,
-                'as_collection' => true,
-                'csv_delimiter' => ';', //Better for Excel
-                'xml_root_node_name' => 'PartDBExport',
-            ]));
+        $serialized_data = $this->serializer->serialize($entity_array, $format,
+                                                        [
+                                                            'groups' => $groups,
+                                                            'as_collection' => true,
+                                                            'csv_delimiter' => ';', //Better for Excel
+                                                            'xml_root_node_name' => 'PartDBExport',
+                                                        ]);
+
+        $response = new Response($serialized_data);
 
         $response->headers->set('Content-Type', $content_type);
 
diff --git a/templates/AdminPages/EntityAdminBase.html.twig b/templates/AdminPages/EntityAdminBase.html.twig
index 3d335c6d..1b4a4130 100644
--- a/templates/AdminPages/EntityAdminBase.html.twig
+++ b/templates/AdminPages/EntityAdminBase.html.twig
@@ -132,7 +132,7 @@
 
                     {% if entity.id %}
                         <div id="export" class="tab-pane fade">
-                            {% include 'AdminPages/_export_form.html.twig' with {'path' : path('attachment_type_export', {'id': entity.id})} %}
+                            {% include 'AdminPages/_export_form.html.twig' with {'path' : path(route_base ~ '_export', {'id': entity.id})} %}
                         </div>
                     {% else %} {# For new element we have a combined import/export tab #}
                         <div id="import_export" class="tab-pane fade">