Issue #3293030: TypeError: Argument 1 passed to...

Issue #3293030: TypeError: Argument 1 passed to Drupal\single_content_sync\ContentSyncHelper::access() must implement interface Drupal\Core\Entity\EntityInterface, string given

src/Form/ContentExportForm.php

@@ -3,6 +3,7 @@
 namespace Drupal\single_content_sync\Form;
 
 use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Form\FormBase;
 use Drupal\Core\Form\FormStateInterface;
@@ -241,11 +242,20 @@ class ContentExportForm extends FormBase {
   }
 
   /**
-   * {@inheritdoc}
+   * Check if user has access to the export form.
    */
   public function access() {
     $parameters = $this->getRouteMatch()->getParameters();
     $entity = $parameters->getIterator()->current();
+
+    if (is_string($entity)) {
+      $entity = $parameters->get($entity);
+    }
+
+    if (!$entity instanceof EntityInterface) {
+      return AccessResult::forbidden();
+    }
+
     $hasAccess = $this->contentSyncHelper->access($entity);
 
     return $hasAccess ? AccessResult::allowed() : AccessResult::forbidden();