[13:40:24] [Client thread/WARN]: Skipping bad option: lastServer:
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.pickItem:key.mouse.middle
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.playerlist:key.keyboard.tab
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.advancements:key.keyboard.l
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.5:key.keyboard.5
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.6:key.keyboard.6
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.7:key.keyboard.7
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.8:key.keyboard.8
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.1:key.keyboard.1
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.2:key.keyboard.2
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.3:key.keyboard.3
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.4:key.keyboard.4
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.sprint:key.keyboard.left.control
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.forward:key.keyboard.w
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.drop:key.keyboard.q
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.back:key.keyboard.s
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.attack:key.mouse.left
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.use:key.mouse.right
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.saveToolbarActivator:key.keyboard.c
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.smoothCamera:key.keyboard.unknown
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.right:key.keyboard.d
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.jump:key.keyboard.space
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.sneak:key.keyboard.left.shift
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.spectatorOutlines:key.keyboard.unknown
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.left:key.keyboard.a
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.command:key.keyboard.slash
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.screenshot:key.keyboard.f2
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.hotbar.9:key.keyboard.9
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.togglePerspective:key.keyboard.f5
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.chat:key.keyboard.t
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.inventory:key.keyboard.e
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.fullscreen:key.keyboard.f11
[13:40:24] [Client thread/WARN]: Skipping bad option: key_key.loadToolbarActivator:key.keyboard.x
[13:40:24] [Client thread/INFO]: LWJGL Version: 2.9.4
[13:40:24] [Client thread/INFO]: Reloading ResourceManager: Default
[13:40:25] [Sound Library Loader/INFO]: Starting up SoundSystem...
[13:40:25] [Thread-3/INFO]: Initializing LWJGL OpenAL
[13:40:25] [Thread-3/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[13:40:25] [Thread-3/INFO]: OpenAL initialized.
[13:40:25] [Sound Library Loader/INFO]: Sound engine started
[13:40:29] [Client thread/INFO]: Created: 1024x512 textures-atlas
[13:40:31] [Client thread/INFO]: Narrator library for x64 successfully loaded
[13:40:50] [Server thread/INFO]: Starting integrated minecraft server version 1.12
[13:40:50] [Server thread/INFO]: Generating keypair
[13:40:50] [Server thread/INFO]: Loaded 488 advancements
[13:40:50] [Server thread/INFO]: Preparing start region for level 0
[13:40:51] [Server thread/INFO]: Changing view distance to 16, from 10
[13:40:51] [Server thread/INFO]: 7Jade[local:E:3ed09aab] logged in with entity id 309 at (126.02137948112555, 71.0, 238.5402984144643)
[13:40:51] [Server thread/INFO]: 7Jade joined the game
[13:40:52] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.util.ConcurrentModificationException
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_51]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_51]
at h.a(SourceFile:47) [1.12.jar:?]
at bhz.az(SourceFile:991) [1.12.jar:?]
at bhz.a(SourceFile:419) [1.12.jar:?]
at net.minecraft.client.main.Main.main(SourceFile:123) [1.12.jar:?]
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) ~[?:1.8.0_51]
at java.util.HashMap$KeyIterator.next(HashMap.java:1453) ~[?:1.8.0_51]
at qv.<init>(SourceFile:27) ~[1.12.jar:?]
at axu.<init>(SourceFile:84) ~[1.12.jar:?]
at brv.d(SourceFile:54) ~[1.12.jar:?]
at brz.b(SourceFile:171) ~[1.12.jar:?]
at brx.a(SourceFile:634) ~[1.12.jar:?]
at je.a(SourceFile:96) ~[1.12.jar:?]
at je.a(SourceFile:18) ~[1.12.jar:?]
at hv$1.run(SourceFile:13) ~[1.12.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_51]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_51]
at h.a(SourceFile:46) ~[1.12.jar:?]
[13:40:52] [Client thread/INFO]: Loaded 19 advancements
[13:40:56] [Server thread/INFO]: Saving and pausing game...
[13:40:56] [Server thread/INFO]: Saving chunks for level 'meh'/overworld
[13:40:56] [Server thread/INFO]: Saving chunks for level 'meh'/the_nether
[13:40:56] [Server thread/INFO]: Saving chunks for level 'meh'/the_end
[13:41:01] [Client thread/INFO]: Using default channel type
[13:41:01] [Client thread/INFO]: Started on 51515
[13:41:01] [Client thread/INFO]: [CHAT] Local game hosted on port 51515
[13:42:11] [Server thread/INFO]: 7Jade lost connection: Disconnected
[13:42:11] [Server thread/INFO]: 7Jade left the game
[13:42:11] [Server thread/INFO]: Stopping singleplayer server as player logged out
[13:42:11] [Server thread/INFO]: Stopping server
[13:42:11] [Server thread/INFO]: Saving players
[13:42:11] [Server thread/INFO]: Saving worlds
[13:42:11] [Server thread/INFO]: Saving chunks for level 'meh'/overworld
[13:42:11] [Server thread/INFO]: Saving chunks for level 'meh'/the_nether
[13:42:11] [Server thread/INFO]: Saving chunks for level 'meh'/the_end