Ionic native MArket plugin gives null value

Ionic Native
1

getting null value in an ionic3 native market plugin in ios. my code:
let appID = ‘’
if (this.networkProvider.networkStatus) {
if (this.platform.is(‘android’)) {
appID = ‘com.SHASHANT’;
} else if (this.platform.is(‘ios’)) {
//app id for ios is just for test
appID = ‘id586447913’;
}
this.market.open(appID).then(data => {
console.log("market open ", appID)
console.log("DATA for market open ", JSON.stringify(data))

  }).catch(err => {
    console.log("err in market open", err)
  })
}