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diff --git a/web/modules/contrib/dropzonejs/src/Controller/UploadController.php b/web/modules/contrib/dropzonejs/src/Controller/UploadController.php
new file mode 100644
index 000000000..fb08090c0
--- /dev/null
+++ b/web/modules/contrib/dropzonejs/src/Controller/UploadController.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Drupal\dropzonejs\Controller;
+
+use Drupal\Core\Ajax\AjaxResponse;
+use Drupal\Core\Controller\ControllerBase;
+use Drupal\dropzonejs\UploadException;
+use Drupal\dropzonejs\UploadHandlerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+
+/**
+ * Handles requests that dropzone issues when uploading files.
+ */
+class UploadController extends ControllerBase {
+
+  /**
+   * The upload handler service.
+   *
+   * @var \Drupal\dropzonejs\UploadHandlerInterface
+   */
+  protected $uploadHandler;
+
+  /**
+   * The current request.
+   *
+   * @var \Symfony\Component\HttpFoundation\Request
+   *   The HTTP request object.
+   */
+  protected $request;
+
+  /**
+   * Constructs dropzone upload controller route controller.
+   *
+   * @param \Drupal\dropzonejs\UploadHandlerInterface $upload_handler
+   *   Upload handler.
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   Request object.
+   */
+  public function __construct(UploadHandlerInterface $upload_handler, Request $request) {
+    $this->uploadHandler = $upload_handler;
+    $this->request = $request;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('dropzonejs.upload_handler'),
+      $container->get('request_stack')->getCurrentRequest()
+    );
+  }
+
+  /**
+   * Handles DropzoneJs uploads.
+   */
+  public function handleUploads() {
+    $file = $this->request->files->get('file');
+    if (!$file instanceof UploadedFile) {
+      throw new AccessDeniedHttpException();
+    }
+
+    // @todo: Implement file_validate_size();
+    try {
+      // Return JSON-RPC response.
+      return new AjaxResponse([
+        'jsonrpc' => '2.0',
+        'result' => basename($this->uploadHandler->handleUpload($file)),
+        'id' => 'id',
+      ]);
+    }
+    catch (UploadException $e) {
+      return $e->getErrorResponse();
+    }
+  }
+
+}