我安装了成功安装的离子v 1.3（意味着安装过程中没有错误）。安装后，当我运行以下命令
ionic start myApp tabs
然后它给出了以下输出
Downloading: https://github.com/driftyco/ionic-app-base/archive/master.zip
[=============================] 100% 0.0s
Downloading: https://github.com/driftyco/ionic-starter-tabs/archive/master.zip
[=============================] 100% 0.0s
Installing npm packages...
Error with start undefined
Error Initializing app: There was an error with the spawned command: npminstall
There was an error with the spawned command: npminstall
Caught exception:
undefined
然后我还在项目目录
中运行了以下命令ionic serve
这给了我以下输出
Couldn't find ionic.config.json file. Are you in an Ionic project?
我也卸载并重新安装离子但仍然遇到上述错误。
如何解决这些问题？