CraftBukkit崩溃了，求大佬帮忙看看错误报告

Question

虽然到这来问真的很不合适，但是还是求各位大佬看看这里

错误描述：

Description: Exception ticking world

java.util.ConcurrentModificationException
    at java.util.HashMap$HashIterator.nextNode(Unknown Source)
    at java.util.HashMap$KeyIterator.next(Unknown Source)
    at net.minecraft.server.v1_12_R1.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:252)
    at net.minecraft.server.v1_12_R1.WorldServer.doTick(WorldServer.java:294)
    at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:742)
    at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:371)
    at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:651)
    at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:555)
    at java.lang.Thread.run(Unknown Source)

错误报告：

-- Head --
Thread: Server thread
Stacktrace:
    at java.util.HashMap$HashIterator.nextNode(Unknown Source)
    at java.util.HashMap$KeyIterator.next(Unknown Source)
    at net.minecraft.server.v1_12_R1.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:252)
    at net.minecraft.server.v1_12_R1.WorldServer.doTick(WorldServer.java:294)

求大佬看一眼啊！现在怀疑是内存超了，理由贴在下面了：

Details:
    Minecraft Version: 1.12.2
    Operating System: Windows Server 2019 (x86) version 10.0
    Java Version: 1.8.0_241, Oracle Corporation
    Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
    Memory: 95634128 bytes (91 MB) / 241205248 bytes (230 MB) up to 1037959168 bytes (989 MB)
    JVM Flags: 1 total; -Xmx1024M
    IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94

上限230M用到989M了......

还求大佬解答

Answer 1

https://tieba.baidu.com/p/6156774445?red_tag=2927230321