问小程序上传测试代码报错？

在测试CGI，腾讯云里上传测试代码时，报错如下，这要怎么解决呢？

{"code":-1,"reason":"/data/release/node-weapp-demo/node_modules/koa-router/lib/layer.js:38\n throw new Error(\n ^\n\nError: get `/demo`: `middleware` must be a function, not `undefined`\n at Layer.<anonymous> (/da"}