at net.minecraft.server.v1_12_R1.Block.fallOn(Block.java:542) ~[Block.cl
ass:git-Akarin-"15bd1f6"]
        at net.minecraft.server.v1_12_R1.Entity.a(Entity.java:1068) ~[Entity.cla
ss:git-Akarin-"15bd1f6"]
        at net.minecraft.server.v1_12_R1.EntityLiving.a(EntityLiving.java:196) ~
[EntityLiving.class:git-Akarin-"15bd1f6"]
        at net.minecraft.server.v1_12_R1.EntityPlayer.a(EntityPlayer.java:810) ~
[EntityPlayer.class:git-Akarin-"15bd1f6"]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.jav
a:743) ~[PlayerConnection.class:git-Akarin-"15bd1f6"]
        at net.minecraft.server.v1_12_R1.PacketPlayInFlying.a(SourceFile:126) ~[
PacketPlayInFlying.class:git-Akarin-"15bd1f6"]
        at net.minecraft.server.v1_12_R1.PacketPlayInFlying$PacketPlayInPosition
.a(SourceFile:57) ~[PacketPlayInFlying$PacketPlayInPosition.class:git-Akarin-"15
bd1f6"]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMain
Thread$0(PlayerConnectionUtils.java:14) ~[PlayerConnectionUtils.class:git-Akarin
-"15bd1f6"]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~
[?:1.8.0_162]
        at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_162]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[SystemUt
ils.class:git-Akarin-"15bd1f6"]
        ... 5 more
>

2021.12 数据，可能有更多内容

  at net.minecraft.server.v1_12_R1.Block.fallOn(Block.java:542) ~[Block.cl
ass:git-Akarin-"15bd1f6"]
  at net.minecraft.server.v1_12_R1.Entity.a(Entity.java:1068) ~[Entity.cla
ss:git-Akarin-"15bd1f6"]
  at net.minecraft.server.v1_12_R1.EntityLiving.a(EntityLiving.java:196) ~
[EntityLiving.class:git-Akarin-"15bd1f6"]
  at net.minecraft.server.v1_12_R1.EntityPlayer.a(EntityPlayer.java:810) ~
[EntityPlayer.class:git-Akarin-"15bd1f6"]
  at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.jav
a:743) ~[PlayerConnection.class:git-Akarin-"15bd1f6"]
  at net.minecraft.server.v1_12_R1.PacketPlayInFlying.a(SourceFile:126) ~[
PacketPlayInFlying.class:git-Akarin-"15bd1f6"]
  at net.minecraft.server.v1_12_R1.PacketPlayInFlying$PacketPlayInPosition
.a(SourceFile:57) ~[PacketPlayInFlying$PacketPlayInPosition.class:git-Akarin-"15
bd1f6"]
  at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMain
Thread$0(PlayerConnectionUtils.java:14) ~[PlayerConnectionUtils.class:git-Akarin
-"15bd1f6"]
  at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~
[?:1.8.0_162]
  at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_162]
  at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[SystemUt
ils.class:git-Akarin-"15bd1f6"]
  ... 5 more
>

请附带完整的日志文件

@Tollainmear大佬日志文件在哪

这个嘛！