Manifest merger failed : `uses-sdk:minSdkVersion 14 cannot be smaller than version 16 declared in library [com.google.firebase:firebase-iid:19.0.0] /Users/kwon/.gradle/caches/transforms-2/files-2.1/7503370eda9be985ee76d9816836e010/firebase-iid-19.0.0/AndroidManifest.xml` as the library might be using APIs not available in 14
 Suggestion: use a compatible library with a `minSdk` of at most 14,
 or increase this project's `minSdk` version to at least 16,
 or use `tools:overrideLibrary="com.google.firebase.iid"` to force usage (may lead to runtime failures)