bugfix

ln_jq_app/lib/main.dart

@@ -75,7 +75,7 @@ void initHttpSet() {
   HttpService.to.setOnResponseHandler((response) async {
     try {
       if (response.data == null) {
-        return '服务繁忙，稍后重试';
+        return null;
       }
       final baseModel = BaseModel.fromJson(response.data);
       if (baseModel.code == 0 || baseModel.code == 200) {