加载广告图，兼容

application/api/controller/Baseconfig.php

@@ -32,6 +32,9 @@ class Baseconfig extends Api
     //启动广告图
     public function start_advert(){
         $info = Db::name('start_advert')->where('is_show',1)->order('id desc')->find();
+        if(empty($info)){
+            $this->success('success',(object)[]);
+        }
         $info = info_domain_image($info,['image']);
         $this->success('success',$info);
     }