Merge branch 'master' of iqiyoo:zhuishuyun_wap into stabble

app/Modules/User/Services/ForceSubscribeUserIService.php

@@ -36,7 +36,7 @@ class ForceSubscribeUserIService
         //没有可用的公众号
         if (empty($useable_appdis)) return ['is_subscribed' => true, 'appid' => '','name'=>''];
         $appids = collect($useable_appdis)->diff($subscribe_appdis)->toArray();
-        if ($appids) {
+        if ($appids && isset($appids[0])) {
             return ['is_subscribed' => false, 'appid' => $appids[0],'name'=>self::$official_name[$appids[0]]];
         }
         return ['is_subscribed' => true, 'appid' => '','name'=>''];