Ionic3 live-reload server gives error

consol error:

Error: WebSocket connection to ‘ws://localhost:35729/livereload’ failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED

cmd error:

TypeError: Cannot read property ‘message’ of undefined
at Server.error (F:\ionic_workspace\bigo-ionic\node_modules\tiny-lr\src\server.js:266:52)
at Socket. (F:\ionic_workspace\bigo-ionic\node_modules\tiny-lr\src\server.js:217:22)
at emitOne (events.js:101:20)
at Socket.emit (events.js:188:7)
at onwriteError (_stream_writable.js:343:10)
at onwrite (_stream_writable.js:361:5)
at WritableState.onwrite (_stream_writable.js:90:5)
at fireErrorCallbacks (net.js:467:13)
at Socket._destroy (net.js:508:3)
at Socket._writeGeneric (net.js:711:17)

ionic info:

global packages:

@ionic/cli-utils : 1.1.2
Cordova CLI      : 7.0.1
Ionic CLI        : 3.1.2

local packages:

@ionic/app-scripts              : 1.3.7
@ionic/cli-plugin-cordova       : 1.1.2
@ionic/cli-plugin-ionic-angular : 1.1.2
Ionic Framework                 : ionic-angular 3.2.1


Node       : v6.10.3
OS         : Windows 7
Xcode      : not installed
ios-deploy : not installed
ios-sim    : not installed

Please help me to solve this error.