Execution failed for task 'app:transofrmDexArchiveWithExternalLibsDexMergerForDebug'

[angielle]

When I run with react-native run-android, it produce the following error

com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\0.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\1.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\2.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\3.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\4.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\5.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\6.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\7.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\8.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\9.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\10.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\11.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\12.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\13.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\14.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\15.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\16.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\17.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\18.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\19.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\20.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\21.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\22.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\23.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\24.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\25.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\26.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\27.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\28.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\29.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\30.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\31.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\32.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\34.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\35.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\36.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\37.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\38.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\39.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\40.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\41.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\42.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\43.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\44.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\45.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\46.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\47.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\48.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\49.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\50.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\51.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\52.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\53.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\54.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\55.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\56.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\57.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\58.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\59.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\60.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\61.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\62.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\63.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\64.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\65.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\66.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\67.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\68.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\69.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\70.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\71.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\72.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\73.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\74.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\75.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\76.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\77.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\78.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\79.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\80.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\81.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\82.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\83.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\84.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\85.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\86.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\87.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\88.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\89.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\90.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\91.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\92.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\93.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\94.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\95.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\96.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\97.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\98.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\99.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\100.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\101.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\102.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\103.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\104.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\105.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\106.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\107.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\108.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\109.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\110.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\111.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\112.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\113.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\114.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\115.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\116.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\117.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\118.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\119.jar, C:\Mobile\demo\android\app\build\intermediates\transforms\dexBuilder\debug\120.jar

[JanOwiesniak]

I heard that adding multiDexEnabled to build.gradle sometimes works.

android {
    defaultConfig {
       multiDexEnabled true
    }
}

Check that you do not have defined duplicate or incompatible android dependencies. Let Android Studio manage these dependencies by clicking on the "Sync" button could fix this issue as well.