no message

resources/views/components/app-layout.blade.php

@@ -5,7 +5,9 @@
        'sSlug'  => '',
        'sOgType'    => 'website',
        'sOgImg' => '/sites/'.config("app.site_code_short").'/siteimg.jpg',
+       'sRobots' => 'index, follow',
 ])
+
 <!DOCTYPE html>
 <html lang="zh-CN">
 <head>
@@ -14,7 +16,7 @@
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     <meta name="csrf-token" content="{{ csrf_token() }}">
     <meta name="slug" content="{{ $sSlug }}">
-    <meta name="robots" content="{{ $sRobots ?? 'index, follow' }}">
+    <meta name="robots" content="{{ $sRobots }}">
 
 @php
     $sTodayDate = now()->format('Y年m月d日'); //有问题？