Unity IAP error on android

Unity Engine
,
1

I am getting this error while initializing the IAP for android in unity:

11-02 16:15:32.621 30766-30781/? I/UnityIAP: Starting in-app billing setup.

11-02 16:15:32.621 30766-30921/? I/UnityIAP: invoking callback

11-02 16:15:32.621 30766-30921/? I/UnityIAP: Checking for in-app billing 3 support.

11-02 16:15:32.621 445-5701/? I/Finsky: [14684] com.google.android.finsky.billing.iab.w.b(29): (My Bundle ID): Account determined from installer data - […]

11-02 16:15:32.621 445-5701/? W/Finsky: [14684] com.google.android.finsky.billing.iab.e.a(440): Billing unavailable for this package and user.

11-02 16:15:32.621 30766-30921/? I/UnityIAP: onIabSetupFinished: 3

11-02 16:15:32.621 30766-30921/? I/UnityIAP: Failed to setup IAB. Notifying Unity…

11-02 16:15:32.631 30766-30781/? I/Unity: OnInitializeFailed InitializationFailureReason: PurchasingUnavailable

I don’t know this error derived from where and why it occurs! any idea?

2

I have figured it out just wanna answer my question:
its because of users region (country), use other country VPN to fix it…