how to implement rewarded ads in flutter

Question

How to implement rewarded ad in flutter.I am trying to implement rewarded ad in flutter but getting this error.

RewardedAd failed to load: LoadAdError(code: 3, domain: com.google.android.gms.ads, message: No ad config., responseInfo: ResponseInfo(responseId: null, mediationAdapterClassName: , adapterResponses: [])) I/hwaps (26743): JNI_OnLoad

Answer 1

You probably need to sign the application to get the config.

You can read more in the issue on the googleads-mobile-flutter library's githab .