[20:49:14 INFO]: Minecraft Launcher 1.6.89-j (through bootstrap 100) started on unknown...
[20:49:14 INFO]: Current time is Nov 16, 2019 8:49:14 PM
[20:49:14 FATAL]: This operating system is unknown or unsupported, we cannot guarantee that the game will launch successfully.
[20:49:14 INFO]: System.getProperty('os.name') == 'FreeBSD'
[20:49:14 INFO]: System.getProperty('os.version') == '12.1-RELEASE-p1'
[20:49:14 INFO]: System.getProperty('os.arch') == 'amd64'
[20:49:14 INFO]: System.getProperty('java.version') == '1.8.0_222'
[20:49:14 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[20:49:14 INFO]: System.getProperty('sun.arch.data.model') == '64'
[20:49:14 INFO]: proxy == DIRECT
[20:49:14 INFO]: Refreshing local version list...
[20:49:14 INFO]: Refreshing remote version list...
[20:49:15 INFO]: Refresh complete.
[20:49:15 INFO]: Loaded 1 profile(s); selected 'XXXXXXXXXXXXXXX'
[20:49:15 INFO]: Refreshing auth...
[20:49:15 INFO]: Logging in with access token
[20:49:18 INFO]: Getting syncinfo for selected version
[20:49:18 INFO]: Queueing library & version downloads
[20:49:18 FATAL]: Unhandled exception in thread Thread[pool-2-thread-2,5,main]
com.google.gson.JsonSyntaxException: duplicate key: null
	at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:190) ~[launcher.jar:1.6.89-j]
	at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:145) ~[launcher.jar:1.6.89-j]
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) ~[launcher.jar:1.6.89-j]
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) ~[launcher.jar:1.6.89-j]
	at com.google.gson.Gson.fromJson(Gson.java:803) ~[launcher.jar:1.6.89-j]
	at com.google.gson.Gson.fromJson(Gson.java:768) ~[launcher.jar:1.6.89-j]
	at com.google.gson.Gson.fromJson(Gson.java:717) ~[launcher.jar:1.6.89-j]
	at com.google.gson.Gson.fromJson(Gson.java:689) ~[launcher.jar:1.6.89-j]
	at net.minecraft.launcher.updater.RemoteVersionList.getCompleteVersion(RemoteVersionList.java:32) ~[launcher.jar:1.6.89-j]
	at net.minecraft.launcher.updater.MinecraftVersionManager.getLatestCompleteVersion(MinecraftVersionManager.java:213) ~[launcher.jar:1.6.89-j]
	at net.minecraft.launcher.updater.MinecraftVersionManager.getLatestCompleteVersion(MinecraftVersionManager.java:37) ~[launcher.jar:1.6.89-j]
	at com.mojang.launcher.game.runner.AbstractGameRunner.playGame(AbstractGameRunner.java:67) ~[launcher.jar:1.6.89-j]
	at net.minecraft.launcher.game.GameLaunchDispatcher$1.run(GameLaunchDispatcher.java:111) ~[launcher.jar:1.6.89-j]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[?:1.8.0_222]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[?:1.8.0_222]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]