My test server did not recover from this.
Code
[07:16:24 INFO]: videogamesm12 issued server command: /cage videogamesm12 head ~FUCK
[07:16:34 ERROR]: --- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH - git-Paper-777 (MC: 1.16.5) ---
[07:16:34 ERROR]: The server has not responded for 10 seconds! Creating thread dump
[07:16:34 ERROR]: ------------------------------
[07:16:34 ERROR]: Server thread dump (Look for plugins here before reporting to Paper!):
[07:16:34 ERROR]: ------------------------------
[07:16:34 ERROR]: Current Thread: Server thread
[07:16:34 ERROR]: PID: 38 | Suspended: false | Native: false | State: TIMED_WAITING
[07:16:34 ERROR]: Stack:
[07:16:34 ERROR]: java.base@16.0.1/java.lang.Thread.sleep(Native Method)
[07:16:34 ERROR]: app//com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:93)
[07:16:34 ERROR]: app//com.destroystokyo.paper.profile.PaperGameProfileRepository.findProfilesByNames(PaperGameProfileRepository.java:44)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.UserCache.a(UserCache.java:93)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.UserCache.getProfile(UserCache.java:149)
[07:16:34 ERROR]: app//org.bukkit.craftbukkit.v1_16_R3.block.CraftSkull.setOwner(CraftSkull.java:76)
[07:16:34 ERROR]: me.totalfreedom.totalfreedommod.caging.CageData.generateHollowCube(CageData.java:93)
[07:16:34 ERROR]: me.totalfreedom.totalfreedommod.caging.CageData.regenerate(CageData.java:161)
[07:16:34 ERROR]: me.totalfreedom.totalfreedommod.caging.CageData.cage(CageData.java:147)
[07:16:34 ERROR]: me.totalfreedom.totalfreedommod.command.Command_cage.run(Command_cage.java:99)
[07:16:34 ERROR]: me.totalfreedom.totalfreedommod.command.FreedomCommand.onCommand(FreedomCommand.java:194)
[07:16:34 ERROR]: me.totalfreedom.totalfreedommod.command.FreedomCommand$FCommand.execute(FreedomCommand.java:356)
[07:16:34 ERROR]: app//org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159)
[07:16:34 ERROR]: app//org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:826)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PlayerConnection.handleCommand(PlayerConnection.java:2185)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:2000)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1953)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:49)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:7)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:35)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.PlayerConnectionUtils$$Lambda$5507/0x0000000801d3c000.run(Unknown Source)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1266)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1259)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.MinecraftServer.sleepForTick(MinecraftServer.java:1220)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1134)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:291)
[07:16:34 ERROR]: app//net.minecraft.server.v1_16_R3.MinecraftServer$$Lambda$3154/0x00000008012d0240.run(Unknown Source)
[07:16:34 ERROR]: java.base@16.0.1/java.lang.Thread.run(Thread.java:831)
[07:16:34 ERROR]: ------------------------------
[07:16:34 ERROR]: --- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH ---
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