[1.20.1forge服务端] 服务器玩家时不时被自动踢出

玩家被踢出时会显示：
lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.util.ConcurrentModificationException
服务后台报错报错片段：
[Netty Server IO #7/ERROR] [net.minecraft.network.PacketEncoder/]: Error receiving packet 85
java.util.ConcurrentModificationException: null
    at java.util.HashMap$HashIterator.nextNode(HashMap.java:1597) ~[?:?]
    at java.util.HashMap$KeyIterator.next(HashMap.java:1620) ~[?:?]
    at net.minecraft.nbt.CompoundTag.m_6434_(CompoundTag.java:133) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.nbt.NbtIo.m_128950_(NbtIo.java:139) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.nbt.NbtIo.m_128941_(NbtIo.java:108) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.FriendlyByteBuf.m_130079_(FriendlyByteBuf.java:588) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.FriendlyByteBuf.writeItemStack(FriendlyByteBuf.java:646) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.FriendlyByteBuf.m_130055_(FriendlyByteBuf.java:625) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.protocol.game.ClientboundSetEquipmentPacket.m_5779_(ClientboundSetEquipmentPacket.java:49) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:45) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:14) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.82.Final.jar%2381!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.82.Final.jar%2381!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.82.Final.jar%2381!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:790) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:758) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:808) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at net.minecraft.network.Connection.m_243087_(Connection.java:224) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at net.minecraft.network.Connection.lambda$sendPacket$8(Connection.java:213) ~[server-1.20.1-20230612.114412-srg.jar%23503!/:?]
    at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.82.Final.jar%2382!/:4.1.82.Final]
    at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.82.Final.jar%2382!/:4.1.82.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.82.Final.jar%2382!/:4.1.82.Final]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) ~[netty-transport-4.1.82.Final.jar%2385!/:4.1.82.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.82.Final.jar%2382!/:4.1.82.Final]
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.82.Final.jar%2382!/:4.1.82.Final]
    at java.lang.Thread.run(Thread.java:842) ~[?:?]