I got some problems in setup

I can't open the browser with live reload, i google it and try some ,but none of them works, so what should i do? Thanks in advance.

➜ Diana $ ionic serve
Native thread-sleep not available.
This will result in much slower performance, but it will still work.
You should re-install spawn-sync or upgrade to the lastest version of node if possible.
Check /usr/local/lib/node_modules/ionic/node_modules/ionic-app-lib/node_modules/cross-spawn/node_modules/spawn-sync/error.log for more details
The port 8100 was taken on the host localhost - using port instead
Gulp startup tasks: 0=sass, 1=watch
Running live reload server: undefined
Watching: 0=www/**/*, 1=!www/lib/**/*
Running dev server: http://localhost:
Ionic server commands, enter:
restart or r to restart the client app from the root
goto or g and a url to have the app navigate to the given url
consolelogs or c to enable/disable console log output
serverlogs or s to enable/disable server log output
quit or q to shutdown the server and exit

ionic $
events.js:72
throw er; // Unhandled 'error' event
^
Error: getaddrinfo ENOTFOUND
at errnoException (dns.js:37:11)
at Object.onanswer as oncomplete
➜ Diana [11:50:59] Using gulpfile ~/Desktop/Diana/Diana/gulpfile.js
[11:50:59] Starting 'sass'...
[11:50:59] Starting 'watch'...
[11:50:59] Finished 'watch' after 8.59 ms
[11:51:00] Finished 'sass' after 980 ms