fix

tests/cheatsheet.php

@@ -1,6 +1,18 @@
-<?require( $_SERVER["DOCUMENT_ROOT"] . "/bitrix/header.php");?>
+<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");?>
 <?
-
+if(\Bitrix\Main\Loader::includeModule('wt.core')) {
+    app()->service()->assets()->setPlugin([
+        'kit:config',
+        'kit:flex-kit',
+        'kit:core',
+        'kit:bsCore',
+        'kit:collapse',
+        'kit:site',
+        'kit:toolkit',
+        'kit:theme',
+    ])->render();
+}
+$APPLICATION->ShowHead();
 
 ?>
 
@@ -886,5 +898,4 @@
     </div>
 </div>
 <?
-?>
-<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/footer.php");?>
+?>