Upgrade to 3.6.1.1

kirby/config/areas/system/views.php

@@ -1,5 +1,6 @@
 <?php
 
+use Kirby\Http\Server;
 
 return [
     'system' => [

kirby/config/tags.php

@@ -298,7 +298,7 @@ return [
             if ($isLocalVideo === true) {
                 // handles local video file
                 if ($tag->file = $tag->file($tag->value)) {
-                    $source = Html::tag('source', null, [
+                    $source = Html::tag('source', '', [
                         'src'  => $tag->file->url(),
                         'type' => $tag->file->mime()
                     ]);