登录提示 duplicate key error

[dramogu]

MongoError: E11000 duplicate key error index: b2urh52bh95t.users.$email_1  dup key: { : "" }
    at Db.wrap (/home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/db.js:1904:11)
    at null.<anonymous> (/home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/collection.js:452:26)
    at g (events.js:180:16)
    at EventEmitter.emit (events.js:106:17)
    at Db._callHandler (/home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/db.js:1439:25)
    at /home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:425:30
    at MongoReply.parseBody (/home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:127:5)
    at null.<anonymous> (/home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:384:22)
    at EventEmitter.emit (events.js:95:17)
    at null.<anonymous> (/home/www/nodeclub/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:136:13)

[tiye]

描述一下重现的具体步骤吧, 是本地运行时出现问题?

[dramogu]

不是本地。就是 http://cnodejs.org 。我退出后，再点击注册出现的。不知道是否因为我修改过github.com的邮箱引起的。ps：貌似我也没有修改过....忘记了。。

[alsotang]

详细点？