CLI command issues just after installing ionic lab

Hi. Before installing ionic-lab everything was working right. But after installing it, I got this error in cmd for serving the app :neutral_face:

ionic $ An uncaught exception occurred and has been reported to Ionic
listen EADDRINUSE (CLI v1.6.4)
Your system information:
Cordova CLI: 5.1.1
Ionic Version: 1.0.1
Ionic CLI Version: 1.6.4
Ionic App Lib Version: 0.3.8
OS: Windows 7 SP1
Node Version: v0.12.7

I uninstalled ionic-lab , but again the same error.

Note: Now I can’t even install ionic-lab again.

Any idea would highly appreciated.

I solved the problem :relaxed:

Updated nodejs to latest version 4.2.3 . It work fine. But there is a warning in CLI. This occurs when nodejs version is less than 0.12.x , but my version is 4.2.3 .Here is the warning:

Upgrade warning - for the CLI to run correctly,
it is highly suggested to upgrade the following:
Please update your Node runtime to version  >=0.12.x