in app purchase - Android IAB What does code -1008 mean? -

as title says, i'm getting error when querying inventory.

failed query inventory: iabresult: nullpointer while refreshing inventory. (response: -1008:unknown error)

someone knows error standing for?

if call mhelper.launchpurchaseflow(....) sku registered subscription in google developer console result in error. means either purchasedata or datasignature null.

check iabhelper.java

   if (purchasedata == null || datasignature == null) {                 logerror("bug: either purchasedata or datasignature null.");                 logdebug("extras: " + data.getextras().tostring());                 result = new iabresult(iabhelper_unknown_error, "iab returned null purchasedata or datasignature");                 if (mpurchaselistener != null) mpurchaselistener.oniabpurchasefinished(result, null);                 return true;             } 

if have sku registered subscription have use method: mhelper.launchsubscriptionpurchaseflow(....)

also check answer: google play in-app purchase returns error code -1008: null puchasedata or datasignature