Error when reporting Offerwall for AdEvent.

Works perfectly fine on iOS, but on Android when I try to record an offerwall ad event I get the following error:

2020-09-30 22:47:42.854 11685-11732/? I/Corona: ERROR: gameanalytics.addAdEvent(options): options.adType, expected value {Video, RewardedVideo, Playable, Interstitial, OfferWall or Banner} got: OfferWall