Getting error while installing npm

npm ERR! code ECONNREFUSED
npm ERR! errno ECONNREFUSED
npm ERR! FetchError: request to http://192.168.101.172:49473/ng-pick-datetime failed, reason: connec
t ECONNREFUSED 127.0.0.1:49473
npm ERR! at ClientRequest.req.on.err (D:\hrms angular\hrms_ui\node_modules\npm\node_modules\paco
te\node_modules\make-fetch-happen\node_modules\node-fetch-npm\src\index.js:68:14)
npm ERR! at ClientRequest.emit (events.js:160:13)
npm ERR! at Socket.socketErrorListener (_http_client.js:389:9)
npm ERR! at Socket.emit (events.js:160:13)
npm ERR! at emitErrorNT (internal/streams/destroy.js:64:8)
npm ERR! at process._tickCallback (internal/process/next_tick.js:152:19)
npm ERR! { FetchError: request to http://192.168.101.172:49473/ng-pick-datetime failed, reason: con
nect ECONNREFUSED 127.0.0.1:49473
npm ERR! at ClientRequest.req.on.err (D:\hrms angular\hrms_ui\node_modules\npm\node_modules\paco
te\node_modules\make-fetch-happen\node_modules\node-fetch-npm\src\index.js:68:14)
npm ERR! at ClientRequest.emit (events.js:160:13)
npm ERR! at Socket.socketErrorListener (_http_client.js:389:9)
npm ERR! at Socket.emit (events.js:160:13)
npm ERR! at emitErrorNT (internal/streams/destroy.js:64:8)
npm ERR! at process._tickCallback (internal/process/next_tick.js:152:19)
npm ERR! message: 'request to http://192.168.101.172:49473/ng-pick-datetime failed, reason: connec
t ECONNREFUSED 127.0.0.1:49473',
npm ERR! type: 'system',
npm ERR! errno: 'ECONNREFUSED',
npm ERR! code: 'ECONNREFUSED',
npm ERR! stack: 'FetchError: request to http://192.168.101.172:49473/ng-pick-datetime failed, reas
on: connect ECONNREFUSED 127.0.0.1:49473\n at ClientRequest.req.on.err (D:\\hrms angular\\hrms_ui
\\node_modules\\npm\\node_modules\\pacote\\node_modules\\make-fetch-happen\\node_modules\\node-fetch
-npm\\src\\index.js:68:14)\n at ClientRequest.emit (events.js:160:13)\n at Socket.socketErrorL
istener (_http_client.js:389:9)\n at Socket.emit (events.js:160:13)\n at emitErrorNT (internal
/streams/destroy.js:64:8)\n at process._tickCallback (internal/process/next_tick.js:152:19)' }
npm ERR!
npm ERR! If you are behind a proxy, please make sure that the
npm ERR! 'proxy' config is set properly. See: 'npm help config'

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\T05057.APPSTEKSOLUTION\AppData\Roaming\npm-cache\_logs\2018-03-16T05_41_44_393
Z-debug.log