- Fix

common/modules/blog/views/post/_subscribe.php

 <?php
 use yii\widgets\ActiveForm;
 use yii\helpers\Html;
-use yii\web\JsExpression;
+use \common\modules\blog\models\BlogBids;
 
 use common\modules\bids\models\Bid;
 $userIsSubscribed = false;
 $cacheEmail = Yii::$app->cache->get('user_email');
-if ($cacheEmail!==false && \common\modules\blog\models\BlogBids::find()->where(['email' => $cacheEmail])->exists()===true)
+if ($cacheEmail!==false && BlogBids::find()->where(['email' => $cacheEmail])->exists()===true)
     $userIsSubscribed = true;
 ?>