https://www.luogu.com.cn/team/1424
如题，咱退役了半年发现团队莫名死了emm
点进去显示出错了
然后就是一串：

Return value of Luogu\Manager\TeamManager::getTeamForum() must be an instance of Luogu\Model\Discuss\Forum, null returned 

恳请管理员帮忙看看怎么回事谢谢qw