我是在升级2++，运行upgrade.php后，点击开始升级后得到这个错误。

Dvbbs.php info: MySQL Query Error
The URL Is:http://www.xxxxx.com.cn/xxx/upgrade.php?
Errno: 1054
Error: Unknown column 'groupface' in 'where clause'
SQL: select id,appusername from dvbbs_group_name where groupface='' or groupface is null
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