我想要一个平均入门套件，以便我可以构建我的应用程序。然后我从github得到了this。我刚安装完毕然后安装了npm，然后启动了npm。但它给我看了几个这样的错误
[nodemon] 1.12.1
[0] [nodemon] to restart at any time, enter `rs`
[0] [nodemon] watching: *.*
[0] [nodemon] starting `node server.js`
[0] ✓ App is running at http://localhost:3000 in development mode
[0] Press CTRL-C to stop
[0]
[1] Cannot read property 'config' of null
[1] TypeError: Cannot read property 'config' of null
[1] at Class.run (/Users/Sites/tryouts/mean/node_modules/@angular/cli/tasks/serve.js:51:63)
[1] at check_port_1.checkPort.then.port (/Users/Sites/tryouts/mean/node_modules/@angular/cli/commands/serve.js:123:26)
[1] at <anonymous>
[1] at process._tickCallback (internal/process/next_tick.js:188:7)
有人可以告诉我如何使这个工作？任何帮助和建议都会非常明显。