When try to build the release build with proguard enable getting below warning and couldn't build the APK successfully.
Warning:io.branch.referral.ExtendedAnswerProvider: can't find referenced class com.crashlytics.android.answers.shim.KitEvent
Warning:io.branch.referral.ExtendedAnswerProvider: can't find referenced class com.crashlytics.android.answers.shim.AnswersOptionalLogger
Warning:io.branch.referral.ExtendedAnswerProvider: can't find referenced class com.crashlytics.android.answers.shim.KitEventLogger
Warning:io.branch.referral.ExtendedAnswerProvider: can't find referenced class com.crashlytics.android.answers.shim.AnswersOptionalLogger
Warning:io.branch.referral.ExtendedAnswerProvider: can't find referenced class com.crashlytics.android.answers.shim.KitEventLogger
Warning:io.branch.referral.ExtendedAnswerProvider: can't find referenced class com.crashlytics.android.answers.shim.KitEvent
Warning:there were 14 unresolved references to classes or interfaces.
Warning:Exception while processing task java.io.IOException: Please correct the above warnings first.
Error:java.lang.RuntimeException: Job failed, see logs for details
Error:java.io.IOException: Please correct the above warnings first.
add -dontwarn com.crashlytics.android.answers.shim.**
to the proguard file