Error while running 'ionic serve --lab'

Getting this error when I run ionic serve --lab

... Uhoh. Got error %s ... listen EADDRINUSE
Error: listen EADDRINUSE
at errnoException (net.js:905:11)
at Server._listen2 (net.js:1043:14)
at listen (net.js:1065:10)
at Server.listen (net.js:1139:5)
at Server.listen (/usr/lib/node_modules/ionic/node_modules/tiny-lr-fork/lib/server.js:138:15)
at Object.IonicTask.start (/usr/lib/node_modules/ionic/lib/ionic/serve.js:164:16)
at /usr/lib/node_modules/ionic/lib/ionic/serve.js:40:10
at Object.IonicTask.getAddress (/usr/lib/node_modules/ionic/lib/ionic/serve.js:633:9)
at Object.IonicTask.loadSettings (/usr/lib/node_modules/ionic/lib/ionic/serve.js:71:8)
at (/usr/lib/node_modules/ionic/lib/ionic/serve.js:33:8)
at (/usr/lib/node_modules/ionic/lib/ionic.js:537:18)
at Object.<anonymous> (/usr/lib/node_modules/ionic/bin/ionic:10:7)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:929:3

Any help will be useful. Thanks in advance.

I get this error when I am already running a server. Make sure you aren’t already running ionic serve on a different terminal.

Done that. No other Ionic server running on different terminal. For now I had again install ionic and cordova on my machine and now its working fine.