Gradle build error with Unity2020.1.0a3

Good evening,
I am deseperatly trying to convert one project to 64bits format. I had lots of troubles and the last one is a Gradle failure at building. I am publishing the report here. I hope someone will be able to help me :

CommandInvokationFailure: Gradle build failed.
D:/Unity/2020.1.0a3/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\OpenJDK\Windows\bin\java.exe -classpath "D:\Unity\2020.1.0a3\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-5.1.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "bundleRelease"

stderr[

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':launcher:checkReleaseDuplicateClasses'.
> 1 exception was raised by workers:
java.lang.RuntimeException: Duplicate class com.google.games.bridge.BuildConfig found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.NativeBridgeActivity found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenFragment found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenFragment$1 found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenFragment$1$1 found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenFragment$2 found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenFragment$3 found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenFragment$TokenRequest found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenPendingResult found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)
Duplicate class com.google.games.bridge.TokenResult found in modules classes.jar com.google.games.gpgs-plugin-support-0.9.62 and classes.jar (classes.jar)

Go to the documentation to learn how to Fix dependency resolution errors.


* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 30s
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
]
stdout[
Starting a Gradle Daemon, 1 incompatible and 4 stopped Daemons could not be reused, use --status for details
> Task :unityLibrary:GooglePlayGamesManifest.pluginreBuild UP-TO-DATE
> Task :launcherreBuild UP-TO-DATE
> Task :unityLibraryreBuild UP-TO-DATE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62reBuild UP-TO-DATE
> Task :unityLibrary:GooglePlayGamesManifest.pluginreReleaseBuild UP-TO-DATE
> Task :unityLibraryreReleaseBuild UP-TO-DATE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62reReleaseBuild UP-TO-DATE
> Task :launcherrepareLintJar
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:checkReleaseManifest
> Task :unityLibrary:checkReleaseManifest
> Task :unityLibrary:GooglePlayGamesManifest.plugin:checkReleaseManifest
> Task :unityLibraryrocessReleaseManifest
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62rocessReleaseManifest
> Task :unityLibrary:GooglePlayGamesManifest.pluginrocessReleaseManifest
> Task :unityLibraryackageReleaseRenderscript NO-SOURCE
> Task :unityLibrary:GooglePlayGamesManifest.pluginackageReleaseRenderscript NO-SOURCE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62ackageReleaseRenderscript NO-SOURCE
> Task :unityLibrary:generateReleaseResValues
> Task :unityLibrary:GooglePlayGamesManifest.plugin:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:generateReleaseResources
> Task :unityLibrary:GooglePlayGamesManifest.plugin:generateReleaseResValues
> Task :unityLibrary:GooglePlayGamesManifest.plugin:generateReleaseResources
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:generateReleaseResValues
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:generateReleaseResources
> Task :unityLibrary:GooglePlayGamesManifest.pluginackageReleaseResources
> Task :unityLibrary:GooglePlayGamesManifest.plugin:mergeReleaseShaders
> Task :unityLibraryackageReleaseResources
> Task :unityLibrary:GooglePlayGamesManifest.plugin:compileReleaseShaders
> Task :unityLibrary:GooglePlayGamesManifest.plugin:generateReleaseAssets
> Task :unityLibrary:mergeReleaseShaders
> Task :unityLibrary:compileReleaseShaders
> Task :unityLibrary:generateReleaseAssets
> Task :unityLibrary:GooglePlayGamesManifest.pluginackageReleaseAssets
> Task :unityLibrary:GooglePlayGamesManifest.plugin:compileReleaseAidl NO-SOURCE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62ackageReleaseResources
> Task :unityLibraryackageReleaseAssets
> Task :unityLibrary:generateReleaseBuildConfig
> Task :unityLibraryrepareLintJar
> Task :unityLibraryrocessReleaseJavaRes NO-SOURCE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:mergeReleaseShaders
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:compileReleaseShaders
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:generateReleaseAssets
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62ackageReleaseAssets
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:compileReleaseAidl NO-SOURCE
> Task :launcherreReleaseBuild
> Task :launcher:compileReleaseRenderscript NO-SOURCE
> Task :launcher:generateReleaseResValues
> Task :launcher:generateReleaseResources
> Task :unityLibrary:GooglePlayGamesManifest.plugin:generateReleaseRFile
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:generateReleaseRFile
> Task :unityLibrary:GooglePlayGamesManifest.plugin:generateReleaseBuildConfig
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:generateReleaseBuildConfig
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62repareLintJar
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:generateReleaseSources
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:javaPreCompileRelease
> Task :unityLibrary:GooglePlayGamesManifest.pluginrepareLintJar
> Task :unityLibrary:GooglePlayGamesManifest.plugin:generateReleaseSources
> Task :unityLibrary:GooglePlayGamesManifest.plugin:javaPreCompileRelease
> Task :unityLibrary:mergeReleaseJniLibFolders
> Task :unityLibrary:compileReleaseAidl NO-SOURCE
> Task :unityLibrary:generateReleaseRFile
> Task :unityLibrary:generateReleaseSources
> Task :unityLibrary:transformNativeLibsWithMergeJniLibsForRelease
> Task :unityLibrary:transformNativeLibsWithStripDebugSymbolForRelease
> Task :unityLibrary:transformNativeLibsWithIntermediateJniLibsForRelease
> Task :unityLibrary:GooglePlayGamesManifest.plugin:compileReleaseJavaWithJavac
> Task :unityLibrary:GooglePlayGamesManifest.plugin:bundleLibCompileRelease
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:compileReleaseJavaWithJavac
> Task :unityLibrary:GooglePlayGamesManifest.plugin:bundleLibRuntimeRelease
> Task :unityLibrary:GooglePlayGamesManifest.pluginrocessReleaseJavaRes NO-SOURCE
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:bundleLibCompileRelease
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:bundleLibRuntimeRelease
> Task :unityLibrary:GooglePlayGamesManifest.plugin:bundleLibResRelease
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62rocessReleaseJavaRes NO-SOURCE
> Task :unityLibrary:GooglePlayGamesManifest.plugin:mergeReleaseJniLibFolders
> Task :unityLibrary:GooglePlayGamesManifest.plugin:transformNativeLibsWithMergeJniLibsForRelease
> Task :unityLibrary:GooglePlayGamesManifest.plugin:transformNativeLibsWithStripDebugSymbolForRelease
> Task :unityLibrary:GooglePlayGamesManifest.plugin:transformNativeLibsWithIntermediateJniLibsForRelease
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:bundleLibResRelease
> Task :unityLibrary:javaPreCompileRelease
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:mergeReleaseJniLibFolders
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:transformNativeLibsWithMergeJniLibsForRelease
> Task :launcher:mergeReleaseResources
> Task :launcher:checkReleaseManifest
> Task :launcher:createReleaseCompatibleScreenManifests
> Task :launcher:mainApkListPersistenceRelease
> Task :launcherrocessReleaseManifest
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:transformNativeLibsWithStripDebugSymbolForRelease
> Task :unityLibrary:com.google.games.gpgs-plugin-support-0.9.62:transformNativeLibsWithIntermediateJniLibsForRelease
> Task :launcher:bundleReleaseResources
> Task :launcher:mergeReleaseShaders
> Task :launcher:compileReleaseShaders
> Task :launcher:generateReleaseAssets
> Task :unityLibrary:compileReleaseJavaWithJavac
> Task :unityLibrary:bundleLibCompileRelease
> Task :unityLibrary:bundleLibRuntimeRelease
> Task :unityLibrary:bundleLibResRelease
> Task :launcher:mergeReleaseAssets
> Task :launcher:checkReleaseDuplicateClasses FAILED

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.1.1/userguide/command_line_interface.html#sec:command_line_warnings
70 actionable tasks: 70 executed
]
exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.Command.Run (System.String command, System.String args, System.String workingdir, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action`1[T] progress, System.String error) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <4870ca009482433dbc8444c5f62e8357>:0)
Rethrow as GradleInvokationException: Gradle build failed
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.PostProcessor.Tasks.BuildGradleProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <4870ca009482433dbc8444c5f62e8357>:0)
Rethrow as BuildFailedException: Exception of type 'UnityEditor.Build.BuildFailedException' was thrown.
UnityEditor.Android.PostProcessor.CancelPostProcess.AbortBuild (System.String title, System.String message, System.Exception ex) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (UnityEditor.BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <4870ca009482433dbc8444c5f62e8357>:0)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <5bab1a3ac70c4024afd9bc9427b3a6a7>:0)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)

Thank you very much