此问题在discuz论坛比较常见，具体报错如下：
Table ‘.\Tablename\posts’ is marked as crashed and should be repaired
直接登录数据库管理工具phpmyadmin(一般虚拟主机都有安装，自己的服务器如果需要使用mysql请一定安装一下)，找到报错的数据表，选中然后点击修复即可
Table ‘.\Tablename\posts’ is marked as crashed and should be repaired
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