SDK Box iap crash on ios when use with PluginOnesignal

Hi guy. I use SDK box iap for in app purchase.
in Android. Everything work fine.
But in IOS, each time i call sdkbox::IAP::purchase(name). app crash immidiately. Without any log.
But, sometime, it work fine ( i can pay with sanbox user test), but at second time app crash. . I have already submit item IAP for review. I can get list product.
please help me.

I use both IAP vs PluginOneSignal.
If i disable PluginOnesignal. Everything Work fine.
How can it use both plugin?

@nite can you help me?

sorry for disturb everyone. I got the problem. Because i call PluginOnesignal::init twice times. So app crash.
Sorry!