Adding already existing cube to column

[Barteks2x]

java.lang.IllegalArgumentException: Cube at 12 already exists!
    at cubicchunks.world.column.CubeMap.put(CubeMap.java:72)
    at net.minecraft.world.chunk.Chunk.addCube(Chunk.java:2782)
    at cubicchunks.server.CubeProviderServer.onCubeLoaded(CubeProviderServer.java:309)
    at cubicchunks.server.CubeProviderServer.getCube(CubeProviderServer.java:289)
    at cubicchunks.server.CubeProviderServer.getCube(CubeProviderServer.java:220)
    at net.minecraft.world.chunk.Chunk.getEBS_CubicChunks(Chunk.java:1809)
    at net.minecraft.world.chunk.Chunk.redirect$getLightSubtracted_CubicChunks_EBSGetRedirect$zzk000(Chunk.java:2140)
    at net.minecraft.world.chunk.Chunk.getLightSubtracted(Chunk.java:728)
    at net.minecraft.world.World.getLight(World.java:788)
    at net.minecraft.world.World.getLight(World.java:749)
    at net.minecraft.world.World.getLightFromNeighbors(World.java:739)
    at net.minecraft.block.BlockGrass.updateTick(BlockGrass.java:45)
    at net.minecraft.block.Block.randomTick(Block.java:605)
    at net.minecraft.world.WorldServer.updateBlocks(WorldServer.java:493)
    at net.minecraft.world.WorldServer.tick(WorldServer.java:228)
    at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:784)
    at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:699)
    at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:548)
    at java.lang.Thread.run(Thread.java:748)

[Secretname2009]

I hosted a LAN server with 0.0.822.0 but when the second player logged in somewhere else but not too close to me, this crash happened: crash-2018-02-01_19.11.45-server.txt

EDIT: Nevermind, i just noticed that this error kept happening randomly over time and if it got bad then it would freeze or crash like above, the cause to my crash seems to be Journeymap Mod