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    posted a message on Twitch won't install Minecraft

    I seem to be having an issue with twitch modpacks aswell as I can accually get them to install on twitch but when launching them it will not seem to verify version and it hangs in the launcher log which is weird because as of 2 weeks ago It was working perfectly fine I uninstalled both twitch and Minecraft leaving no traces of either on the pc and updated java and then reinstalled normal Minecraft then twitch and the modpacks and still the same issues ill post a copy of the launcher log for anyone who can make heads or tails of it 

     

    [12:00:03 INFO]: Minecraft Launcher 1.6.91 (through bootstrap 100) started on windows...
    [12:00:03 INFO]: Current time is Sep 9, 2019 12:00:03 PM
    [12:00:03 INFO]: System.getProperty('os.name') == 'Windows 10'
    [12:00:03 INFO]: System.getProperty('os.version') == '10.0'
    [12:00:03 INFO]: System.getProperty('os.arch') == 'amd64'
    [12:00:03 INFO]: System.getProperty('java.version') == '1.8.0_221'
    [12:00:03 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
    [12:00:03 INFO]: System.getProperty('sun.arch.data.model') == '64'
    [12:00:03 INFO]: proxy == DIRECT
    [12:00:03 INFO]: JFX is already initialized
    [12:00:03 INFO]: Refreshing local version list...
    [12:00:03 INFO]: Refreshing remote version list...
    [12:00:04 INFO]: Refresh complete.
    [12:00:04 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$2.run(Launcher.java:183) [launcher.jar:1.6.91]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_221]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
    [12:00:04 INFO]: Refreshing auth...
    [12:00:04 INFO]: Logging in with access token
    [12:00:04 FATAL]: Unhandled exception in thread Thread[AWT-EventQueue-0,6,main]
    com.google.gson.JsonSyntaxException: duplicate key: null
    at com.google.gson.internal.bind.MapTypeAdapterFactory$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.awt.event.InvocationEvent.dispatch(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.access$500(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_221]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_221]
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.dispatchEvent(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.run(Unknown Source) [?:1.8.0_221]
    [12:00:05 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.awt.event.InvocationEvent.dispatch(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.access$500(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue$3.run(Unknown Source) ~[?:1.8.0_221]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_221]
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventQueue.dispatchEvent(Unknown Source) ~[?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [?:1.8.0_221]
    at java.awt.EventDispatchThread.run(Unknown Source) [?:1.8.0_221]
    [12:00:05 ERROR]: Unhandled exception in executor com.mojang.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask@295538b3
    java.util.concurrent.ExecutionException: com.google.gson.JsonSyntaxException: duplicate key: null
    at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_221]
    at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_221]
    at com.mojang.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask.done(ExceptionalThreadPoolExecutor.java:58) [launcher.jar:1.6.91]
    at java.util.concurrent.FutureTask.finishCompletion(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.FutureTask.setException(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_221]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_221]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
    Caused by: com.google.gson.JsonSyntaxException: duplicate key: null
    at com.google.gson.internal.bind.MapTypeAdapterFactory$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$2.run(Launcher.java:213) ~[launcher.jar:1.6.91]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_221]
    ... 4 more

    Posted in: Support
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