react-native-iap: RNIap.getProducts not returning promise on ios

Version of react-native-iap

“react-native-iap”: “^2.3.25”

Version of react-native

“react-native”: “0.57.4”,

Platforms you faced the error (IOS or Android or both?)

IOS

Expected behavior

buyProduct should return promise ( .then() is not call ),

Actual behavior

buyProduct not returning any promise, in android its working fine, .then() call successfully, but in ios its not.

Tested environment (Emulator? Real Device?)

Real Device

Steps to reproduce the behavior

onBuyNowPress() {
    this.setState({ loading: true });
    RNIap.getProducts(['product_id']).then(success => { 
       RNIap.buyProduct('product_id').then(purchase => { 
        console.log("Purchase >>", purchase)
        this.setState({
          loading: false,
          receipt: purchase.transactionReceipt, 
        });
        Alert.alert('Purchase Successful!');
        this.props.getPurchase();
       }).catch(err => { 
         console.log(err.code, err.message);
          this.setState({ loading: false });
          Alert.alert(err.message);
          if(err.message === "You already own this item.") {
            this.props.getPurchase();
          }
        }) 
      }).catch(error => { 
        alert(error); 
        this.setState({ loading: false });
      })
  }

In ios i already buy product, so again when i press buy now, i get popup like you already purchase this product. but .then() or .catch() not getting call.

i also tried getAvailablePurchases() method, its always return []