Xtykutl

When I run the app below mentioned error is coming. Can any body please help on solving my issue.

I will be very thankful.

Task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug' is not up-to-date because:

  Task has failed previously.

All input files are considered out-of-date for incremental task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

Merging to 'E:AndroidMyProjectsMySaloonsappbuildintermediatestransformsexternalLibsDexMergerdebug' with D8 from 

AGPBI: {"kind":"error","text":"Program type already present: android.arch.core.util.Function","sources":[{}],"tool":"D8"}

:app:transformDexArchiveWithExternalLibsDexMergerForDebug FAILED

:app:transformDexArchiveWithExternalLibsDexMergerForDebug (Thread[Daemon worker Thread 2,5,main]) completed. Took 1.446 secs.

:app:buildInfoGeneratorDebug (Thread[Daemon worker Thread 2,5,main]) started.

:app:buildInfoGeneratorDebug

Task ':app:buildInfoGeneratorDebug' is not up-to-date because:

  Task has not declared any outputs.

:app:buildInfoGeneratorDebug (Thread[Daemon worker Thread 2,5,main]) completed. Took 0.013 secs.



FAILURE: Build failed with an exception.



* What went wrong:

Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

> com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: 

  Learn how to resolve the issue at https://developer.android.com/studio/build/dependencies#duplicate_classes.

  Program type already present: android.arch.core.util.Function



* Try:

Run with --debug option to get more log output. Run with --scan to get full insights.



* Exception is:



Caused by: com.android.tools.r8.utils.AbortException: Error: Program type already present: android.arch.core.util.Function

    at com.android.tools.r8.utils.Reporter.failIfPendingErrors(Reporter.java:116)

    at com.android.tools.r8.utils.Reporter.fatalError(Reporter.java:74)

    at