TypeError: Object [object Object] has no method 'url'

[fengmk2]

TypeError: Object [object Object] has no method 'url'
    at Object.exports.download (/home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/controllers/registry/module.js:185:17)
    at GeneratorFunctionPrototype.next (native)
    at Object.next (/home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/node_modules/koa/node_modules/co/index.js:70:21)
    at /home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/node_modules/koa/node_modules/co/index.js:89:18
    at /home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/node_modules/thunkify-wrap/node_modules/thunkify/index.js:28:12
    at /home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/proxy/module.js:216:5
    at /home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/common/mysql.js:52:5
    at Query.<anonymous> (/home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/common/mysql.js:39:5)
    at Query._callback (/home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/node_modules/mysql/lib/Pool.js:136:10)
    at Query.Sequence.end (/home/admin/tnpm-server/target/tnpm-server/node_modules/cnpmjs.org/node_modules/mysql/lib/protocol/sequences/Sequence.js:78:24)