demo 运行不了

[sdlbp]

执行 node app.js 时候报错
/Users/lbp/Downloads/demo-master/node_modules/connect/lib/proto.js:70
if ('function' == typeof fn.handle) {
^

TypeError: Cannot read property 'handle' of undefined
at Function.app.use (/Users/lbp/Downloads/demo-master/node_modules/connect/lib/proto.js:70:30)
at Object. (/Users/lbp/Downloads/demo-master/app.js:6:4)
at Module._compile (module.js:577:32)
at Object.Module._extensions..js (module.js:586:10)
at Module.load (module.js:494:32)
at tryModuleLoad (module.js:453:12)
at Function.Module._load (module.js:445:3)
at Module.runMain (module.js:611:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:160:9)