Problème launcher twitch

Bonjour,

Je joue à minecraft sur Mac à partir du launcher Twitch mais depuis ce matin je n'arrive plus à jouer. le launcher m'indique ceci :
[14:31:13 INFO]: Minecraft Launcher 1.6.91 (through bootstrap 100) started on osx...
[14:31:13 INFO]: Current time is Jun 17, 2020, 2:31:13 PM
[14:31:13 INFO]: System.getProperty('os.name') == 'Mac OS X'
[14:31:13 INFO]: System.getProperty('os.version') == '10.15.1'
[14:31:13 INFO]: System.getProperty('os.arch') == 'x86_64'
[14:31:13 INFO]: System.getProperty('java.version') == '13.0.1'
[14:31:13 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[14:31:13 INFO]: System.getProperty('sun.arch.data.model') == '64'
[14:31:13 INFO]: proxy == DIRECT
[14:31:13 INFO]: Refreshing local version list...
[14:31:13 INFO]: Refreshing remote version list...
[14:31:14 INFO]: Refresh complete.
[14:31:14 ERROR]: Unexpected exception refreshing profile list
com.google.gson.JsonSyntaxException: duplicate key: null
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:190) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:145) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:803) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:717) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:689) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.RemoteVersionList.getCompleteVersion(RemoteVersionList.java:32) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getLatestCompleteVersion(MinecraftVersionManager.java:213) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:268) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:255) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersionSyncInfo(MinecraftVersionManager.java:171) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersions(MinecraftVersionManager.java:105) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.game.GameLaunchDispatcher.getStatus(GameLaunchDispatcher.java:35) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayButtonPanel.checkState(PlayButtonPanel.java:94) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayButtonPanel.onProfilesRefreshed(PlayButtonPanel.java:90) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.profile.ProfileManager.fireRefreshEvent(ProfileManager.java:100) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.profile.ProfileManager.loadProfiles(ProfileManager.java:88) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.Launcher$2.run(Launcher.java:183) [launcher.jar:1.6.91]
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
at java.base/java.lang.Thread.run(Thread.java:830) [?:?]
[14:31:14 INFO]: Refreshing auth...
[14:31:14 INFO]: Logging in with access token
[14:31:14 FATAL]: Unhandled exception in thread Thread[AWT-EventQueue-0,6,main]
com.google.gson.JsonSyntaxException: duplicate key: null
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:190) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:145) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:803) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:717) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:689) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.RemoteVersionList.getCompleteVersion(RemoteVersionList.java:32) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getLatestCompleteVersion(MinecraftVersionManager.java:213) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:268) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:255) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersionSyncInfo(MinecraftVersionManager.java:171) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersions(MinecraftVersionManager.java:105) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayerInfoPanel.checkState(PlayerInfoPanel.java:96) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayerInfoPanel$2.run(PlayerInfoPanel.java:78) ~[launcher.jar:1.6.91]
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313) ~[?:?]
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770) ~[?:?]
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721) ~[?:?]
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715) ~[?:?]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391) ~[?:?]
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?]
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740) ~[?:?]
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?]
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]
[14:31:14 ERROR]: Unhandled exception in executor com.mojang.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask@4d6c8165[Completed exceptionally: com.google.gson.JsonSyntaxException: duplicate key: null]
java.util.concurrent.ExecutionException: com.google.gson.JsonSyntaxException: duplicate key: null
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:?]
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[?:?]
at com.mojang.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask.done(ExceptionalThreadPoolExecutor.java:58) [launcher.jar:1.6.91]
at java.base/java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:381) [?:?]
at java.base/java.util.concurrent.FutureTask.setException(FutureTask.java:250) [?:?]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:269) [?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
at java.base/java.lang.Thread.run(Thread.java:830) [?:?]
Caused by: com.google.gson.JsonSyntaxException: duplicate key: null
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:190) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:145) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:803) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:717) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:689) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.RemoteVersionList.getCompleteVersion(RemoteVersionList.java:32) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getLatestCompleteVersion(MinecraftVersionManager.java:213) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:268) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:255) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersionSyncInfo(MinecraftVersionManager.java:171) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersions(MinecraftVersionManager.java:105) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.game.GameLaunchDispatcher.getStatus(GameLaunchDispatcher.java:35) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayButtonPanel.checkState(PlayButtonPanel.java:94) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayButtonPanel.onProfilesRefreshed(PlayButtonPanel.java:90) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.profile.ProfileManager.fireRefreshEvent(ProfileManager.java:100) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.Launcher.ensureLoggedIn(Launcher.java:265) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.Launcher$2.run(Launcher.java:213) ~[launcher.jar:1.6.91]
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[?:?]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
... 3 more
[14:31:14 FATAL]: Unhandled exception in thread Thread[AWT-EventQueue-0,6,main]
com.google.gson.JsonSyntaxException: duplicate key: null
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:190) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:145) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) ~[launcher.jar:1.6.91]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:803) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:717) ~[launcher.jar:1.6.91]
at com.google.gson.Gson.fromJson(Gson.java:689) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.RemoteVersionList.getCompleteVersion(RemoteVersionList.java:32) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getLatestCompleteVersion(MinecraftVersionManager.java:213) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:268) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.CompleteMinecraftVersion.resolve(CompleteMinecraftVersion.java:255) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersionSyncInfo(MinecraftVersionManager.java:171) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.updater.MinecraftVersionManager.getVersions(MinecraftVersionManager.java:105) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayerInfoPanel.checkState(PlayerInfoPanel.java:96) ~[launcher.jar:1.6.91]
at net.minecraft.launcher.ui.bottombar.PlayerInfoPanel$2.run(PlayerInfoPanel.java:78) ~[launcher.jar:1.6.91]
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313) ~[?:?]
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770) ~[?:?]
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721) ~[?:?]
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715) ~[?:?]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391) ~[?:?]
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?]
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740) ~[?:?]
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?]
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?]
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]


Merci