Ionic proxy just 404 errors at localhost

Ionic Framework ionic-v3
3 
  "proxies": [{
    "path": "/ui/getList",
    "proxyUrl": "http://192.168.10.110:8888/ui/getList"
  },{
    "path": "/ui/create",
    "proxyUrl": "http://192.168.10.110:8888/ui/create"
  },{
    "path": "/ui/getOverviewData",
    "proxyUrl": "http://192.168.10.110:8888/ui/getOverviewData"
  }]