Execution failed for task ':app:kaptDebugKotlin'. code example

Example 1: Execution failed for task ':app:processDebugGoogleServices'.

You should delete a line apply plugin: 'com.google.gms.google-services'

because "com.android.application" package already has same package.

Example 2: Execution failed for task ':app:kaptDebugKotlin'

If you are using the Room database and getting a KAPT error, just check your

Database declarations
Data Access Object declarations
Data class fields
It's a problem arising due to improper usage of annotations of Room. For more information use your build logs.