Results 2 issues of fankane

Version:v2.1.2 ```go a, err := admin.NewAdmin(admin.WithResolver(primitive.NewPassthroughResolver(nameServerAddrs))) if err != nil { return nil, fmt.Errorf("new admin err:%s, addr:%v", err, nameServerAddrs) } res, err := a.FetchAllTopicList(ctx) //会报错 if err != nil {...