My problem is that I made a custom super flat world on single player, after I did that I created a server to use world edit, other plugins and to be able to play with my friends. But yesterday when I was in the middle of playing I disconnected some how. When I went to the server page the server was stopping. I didn't think much of it so I started the server up again and tried playing. I was in game for about 5 seconds before I was disconnected and the server shut down, here is the console.
[20:34:18] [Server thread/INFO]: [ClearLag] Enabling ClearLag v2.9.7
[20:34:19] [Server thread/INFO]: [ClearLag] Loading modules...
[20:34:19] [Server thread/INFO]: [ClearLag] Modules enabed, loading config values
[20:34:19] [Server thread/INFO]: [ClearLag] Modules have been loaded!
[20:34:19] [Server thread/INFO]: [ClearLag] Clearlag is now enabled!
[20:34:19] [Thread-7/INFO]: [ClearLag] Checking for updates compatible with your bukkit version [1.8]...
[20:34:19] [Server thread/INFO]: [WorldEdit] Enabling WorldEdit v6.1;no_git_id
[20:34:21] [Server thread/INFO]: WEPIF: Using the Bukkit Permissions API.
[20:34:22] [Server thread/INFO]: [WorldEdit] Using com.sk89q.worldedit.bukkit.adapter.impl.Spigot_v1_8_R3 as the Bukkit adapter
[20:34:22] [Server thread/INFO]: [Shopkeepers] Enabling Shopkeepers v1.86
[20:34:23] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[20:34:23] [Server thread/INFO]: Done (10.864s)! For help, type "help" or "?"
[20:34:23] [Server thread/INFO]: Starting GS4 status listener
[20:34:23] [Query Listener #1/INFO]: Query running on 0.0.0.0:45717
[20:34:24] [Thread-7/INFO]: [ClearLag] No updates found!
[20:34:41] [Server thread/INFO]: RAGING_GOOSE[/32.211.187.254:55512] logged in with entity id 139 at ([world]219.8264092519976, 64.0, 879.7106476179599)
[20:34:42] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.RuntimeException: java.util.zip.ZipException: invalid distance too far back
at org.bukkit.craftbukkit.v1_8_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:34) ~inecraft_server.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:1) ~inecraft_server.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.util.AsynchronousExecutor$Task.init(AsynchronousExecutor.java:150) ~inecraft_server.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.util.AsynchronousExecutor$Task.initAsync(AsynchronousExecutor.java:95) ~inecraft_server.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.util.AsynchronousExecutor$Task.run(AsynchronousExecutor.java:85) ~inecraft_server.jar:git-Bukkit-18fbb24]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[?:1.8.0_144]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[?:1.8.0_144]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
Caused by: java.util.zip.ZipException: invalid distance too far back
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164) ~[?:1.8.0_144]
at java.io.BufferedInputStream.fill(BufferedInputStream.java:246) ~[?:1.8.0_144]
at java.io.BufferedInputStream.read(BufferedInputStream.java:265) ~[?:1.8.0_144]
at java.io.DataInputStream.readByte(DataInputStream.java:265) ~[?:1.8.0_144]
at net.minecraft.server.v1_8_R3.NBTCompressedStreamTools.a(SourceFile:95) ~inecraft_server.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.NBTCompressedStreamTools.a(SourceFile:71) ~inecraft_server.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.NBTCompressedStreamTools.a(SourceFile:67) ~inecraft_server.jar:git-Bukkit-18fbb24]
at net.minecraft.server.v1_8_R3.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:68) ~inecraft_server.jar:git-Bukkit-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:25) ~inecraft_server.jar:git-Bukkit-18fbb24]
... 7 more
[20:34:42] [Server thread/ERROR]: This crash report has been saved to: /aternos/server/./crash-reports/crash-2018-03-01_20.34.42-server.txt
[20:34:42] [Server thread/INFO]: Stopping server
[20:34:42] [Server thread/INFO]: [Shopkeepers] Disabling Shopkeepers v1.86
[20:34:42] [Server thread/INFO]: [WorldEdit] Disabling WorldEdit v6.1;no_git_id
[20:34:42] [Server thread/INFO]: [ClearLag] Disabling ClearLag v2.9.7
[20:34:42] [Server thread/INFO]: [ClearLag] Clearlag is now disabled!
[20:34:42] [Server thread/INFO]: Saving players
[20:34:42] [Server thread/INFO]: RAGING_GOOSE lost connection: Server closed
[20:34:42] [Server thread/INFO]: RAGING_GOOSE left the game.
[20:34:42] [Server thread/INFO]: Saving worlds
[20:34:42] [Server thread/INFO]: Saving chunks for level 'world'/Overworld
[20:34:44] [Server thread/INFO]: Saving chunks for level 'world_nether'/Nether
[20:34:46] [Server thread/INFO]: Saving chunks for level 'world_the_end'/The End
I have found that this could be, because of the fact that is is not set to "online-mode" it told me in log to set it to online true in server.properties file yet I don't know how to get to it.