I got this error;
FAILURE: Build failed with an exception.
Task :App:mergeReleaseResourcesFAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':App:processReleaseManifest'. > Manifest merger failed : uses-sdk:minSdkVersion 15 cannot be smaller than version 16 declared in library [com.google.android.gms:play-services-ads:19.3.0] /Users/baykal/.gradle/caches/transforms-2/files-2.1/71b73b1657c564a1d0f51c1f8115f372/jetified-play-services-ads-19.3.0/AndroidManifest.xml as the library might be using APIs not available in 15 Suggestion: use a compatible library with a minSdk of at most 15, or increase this project's minSdk version to at least 16, or use tools:overrideLibrary="com.google.android.gms.ads.impl" to force usage (may lead to runtime failures) * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
It seems it is about the AdMob plugin. Help is greatly appreciated.