Problem/Bug Chunks Keep Resetting and not Saving

Discussion in 'Bukkit Help' started by SirFoop, Jan 14, 2018.

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    SirFoop

    A player on my server encountered an error, when ever he places a block in a chunk, or breaks a block, it regenerates. For some reason this does not happen in my spawn. It gives the error message:
    Code:
     [14:57:43 ERROR]: Couldn't save chunk; already in use by another instance of Minecraft? net.minecraft.server.v1_12_R1.ExceptionWorldConflict: Failed to check session lock, aborting         at net.minecraft.server.v1_12_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:85) ~[craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.World.checkSession(World.java:2685) ~[craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.ChunkRegionLoader.saveChunk(ChunkRegionLoader.java:120) ~[craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.ChunkProviderServer.saveChunk(ChunkProviderServer.java:207) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.ChunkProviderServer.unloadChunk(ChunkProviderServer.java:299) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:257) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.WorldServer.doTick(WorldServer.java:291) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:742) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:371) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:651) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:555) [craftbukkit-1.12.2.jar:git-Bukkit-bd30843]         at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]
     
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    timtower Administrator Administrator Moderator

    @SirFoop Kill all servers that are running.
    Then try again.
     
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