Find and update the below code in that custom theme.julianlam committed to NodeBB/nodebb-theme-persona chore: remove .opacity() mixin as it is supported cross-browser
网站安装以后，数据经常丢失，使用的数据库是 mongodb，是不是 mongodb不稳定，有什么建议！
Suggests a problem with MongoDB not being able to persist to disk -- check your MongoDB configuration or logs.
@julian U understand Chinese hoho I though ur a Korean before
@sharonyue I am originally from HK, but raised in Canada, so I know colloquial Cantonese only
Google Translate is my friend here.