“接受”邀请按钮无法使用

[codinghorror (Jeff Atwood)]

我不太确定，@dax，你看到什么了吗？错误提示不太清楚。这可能是最近数据库中出现重复用户偏好设置导致的问题：

User cannot signup due to duplicate values in category notification states

Hello Members can’t sign up to the site. This has started 11 days ago and no new users have been able to join the site ever since this was reported. Here is the logs I’ve found for this. [discourse%20error%201] A little note: We have migrated Vbulletin 4 database like 2 months ago to discourse. We never encountered this problem before. Any help will be highly appreciated. Thanks

以管理员身份登录后，在 /logs 中是否看到任何相关错误？