#1446

Author: Stanislav Idolov

app/code/Magento/Swagger/view/frontend/templates/swagger-ui/index.phtml

@@ -1,5 +1,8 @@
 <?php
 /**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ *
  * swagger-ui - Swagger UI is a dependency-free collection of HTML, JavaScript, and CSS
  * assets that dynamically generate beautiful documentation from a Swagger-compliant API
  *
@@ -21,7 +24,7 @@ $schemaUrl = $block->getSchemaUrl();
     <div class="swagger-ui-wrap">
         <a id="logo" href="http://swagger.io">swagger</a>
         <form id='api_selector'>
-            <input id="input_baseUrl" type="hidden" value="<?= /* @escapeNotVerified */ $schemaUrl ?>"/>
+            <input id="input_baseUrl" type="hidden" value="<?php /* @escapeNotVerified */ echo $schemaUrl ?>"/>
             <div class='input'><input placeholder="api_key" id="input_apiKey" name="apiKey" type="text"/></div>
             <div class='input'><a id="explore" href="#" data-sw-translate>apply</a></div>
         </form>