Merge pull request #4001 from SDKiller/patch-2

Fix html markdown for span class="not-set" when time is not set

extensions/debug/views/default/panels/mail/_item.php

@@ -4,8 +4,6 @@
 use yii\helpers\Html;
 use yii\widgets\DetailView;
 
-$timeFormatter = extension_loaded('intl') ? Yii::createObject(['class' => 'yii\i18n\Formatter']) : Yii::$app->formatter;
-
 echo DetailView::widget([
     'model' => $model,
     'attributes' => [
@@ -15,7 +13,7 @@ echo DetailView::widget([
         'charset',
         [
             'attribute' => 'time',
-            'value' => $timeFormatter->asDateTime($model['time'], 'short'),
+            'format' => 'datetime',
         ],
         'subject',
         [