TypeError: Cannot call method 'toLowerCase' of undefined

[fengmk2]

[2014-03-29 20:52:25] [error] [jasmine-node] sync error: TypeError: Cannot call method 'toLowerCase' of undefined
    at /home/www/git/cnpmjs.org/proxy/sync_module_worker.js:262:27
    at Array.forEach (native)
    at SyncModuleWorker._sync (/home/www/git/cnpmjs.org/proxy/sync_module_worker.js:261:17)
    at GeneratorFunctionPrototype.next (native)
    at next (/home/www/git/cnpmjs.org/node_modules/co/index.js:77:21)
    at /home/www/git/cnpmjs.org/node_modules/co/index.js:96:18
    at /home/www/git/cnpmjs.org/node_modules/co/index.js:198:24
    at /home/www/git/cnpmjs.org/node_modules/thunkify-wrap/index.js:75:12
    at /home/www/git/cnpmjs.org/proxy/module.js:432:5
    at Query.<anonymous> (/home/www/git/cnpmjs.org/common/mysql.js:44:5)
[2014-03-29 20:52:25] [done] Sync jasmine-node module finished, 0 success, 1 fail

[fengmk2]