fix

api/controllers/ServiceController.php

@@ -103,7 +103,7 @@ class ServiceController extends BaseController
         $rows = Coin::getSelectList(1, 999, $fields, [['in', 'id', $coin_recommendItems]], $coin_recommendItems);
         foreach ($rows['data'] as $key => &$value) {
             $nickname = json_decode($value['nickname'], true);
-            $value['nickname'] = $nickname[$this->lang];
+            $value['nickname'] = isset($nickname[$this->lang]) ? $nickname[$this->lang] : '';
         }
         return ['code' => 0, 'data' => $rows, 'msg' => '币种列表获取成功'];
     }