diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 3d9e969..75d4b13 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -1192,6 +1192,10 @@ final class ApiController extends Controller
             $view->setTemplate('/Modules/Media/Theme/Api/render');
         } elseif ($type === 'html') {
             $head = new Head();
+            if (!\is_file(__DIR__ . '/../../../Web/Backend/css/backend-small.css')) {
+                $css = '';
+            }
+
             $css  = \file_get_contents(__DIR__ . '/../../../Web/Backend/css/backend-small.css');
             if ($css === false) {
                 $css = ''; // @codeCoverageIgnore