message: fix: checking if there is user lastMonth rank
diff: @@ -278,6 +278,8 @@ export class UserRewardsService implements OnModuleInit {
  1,
  );
  + if (!user) return;
  +
  const badge = await this.badgeRepository.findByEventNameAndOrder(
  EventNameEnum.USER_REWARD_TOP_MONTH,
  1,
  