Server crashes randomly

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    As the title says my server randomly crashes at times logging a nullpointer exception,

    crash report: (As a file because of the 10.000 character limit)

    crash.txt

    It seemed to crash this way at first when the server was under heavy load mainly because of lighting updates, so I installed phosphor for Forge however now they just seem to happen randomly,


    Any help would be appreciated :)

    My apologies, that was the crash report not the log, I'll share those as well
    https://mclo.gs/b86506j


    And now that I'm taking a second look after a nights sleep, the issue might be the /mvps command,

    though I'm not sure.. It logs this when I execute this. Is it the command that starts the gathering for the ID map or was that just a coincidence?

    I'll test it out tonigth if I have the time.

    [19:26:28] [Server thread/DEBUG] [FML]: Gathering id map for writing to world save world
    [19:26:28] [Server thread/ERROR] [net.minecraft.server.MinecraftServer]: Encountered an unexpected exception
    [19:26:28] [Server thread/DEBUG] [org.dimdev.utils.ModIdentifier]: java.util.EnumMap = java.util.EnumMap = jar:file:/usr/local/openjdk-8/jre/lib/rt.jar!/java/util/EnumMap.class