googleplaybilling libary

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    Android Question Error (NullPointerException) when calling LaunchBillingFlow (GooglePlayBilling Libary)

    Hello All, I am currently reprogramming my app to the new GooglePlayBilling Libary. So far everything has worked fine, but when I now want to buy a subscription, it comes within LaunchBillingFlow to an error. I have already read all the entries about this, but unfortunately no one has had this...
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