Qt Purchasing (Android): Crash when testing IAP purchases due to missing field "orderId"

W System.err: org.json.JSONException: No value for orderId
W System.err: 	at org.json.JSONObject.get(JSONObject.java:389)
W System.err: 	at org.json.JSONObject.getString(JSONObject.java:550)
W System.err: 	at org.qtproject.qt5.android.purchasing.QtInAppPurchase.handleActivityResult(QtInAppPurchase.java:359)
W System.err: 	at org.qtproject.qt5.android.QtNative.onActivityResult(Native Method)
W System.err: 	at org.qtproject.qt5.android.QtActivityDelegate.onActivityResult(QtActivityDelegate.java:1016)
W System.err: 	at java.lang.reflect.Method.invoke(Native Method)
W System.err: 	at org.qtproject.qt5.android.bindings.QtApplication.invokeDelegateMethod(QtApplication.java:156)
W System.err: 	at org.qtproject.qt5.android.bindings.QtActivity.onActivityResult(QtActivity.java:172)
W System.err: 	at android.app.Activity.dispatchActivityResult(Activity.java:6456)
W System.err: 	at android.app.ActivityThread.deliverResults(ActivityThread.java:3695)
W System.err: 	at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742)
W System.err: 	at android.app.ActivityThread.-wrap16(ActivityThread.java)
W System.err: 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)
W System.err: 	at android.os.Handler.dispatchMessage(Handler.java:102)
W System.err: 	at android.os.Looper.loop(Looper.java:148)
W System.err: 	at android.app.ActivityThread.main(ActivityThread.java:5422)
W System.err: 	at java.lang.reflect.Method.invoke(Native Method)
W System.err: 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
W System.err: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

// 2 times:
if (jo.has("orderId")) {
	orderId = jo.getString("orderId");
}

// Also in method queryPurchasedProducts()