[21:13:18 ERROR]: Error occurred while enabling Matrix v2.8.1 (Is it up to date?)
com.comphenix.protocol.reflect.FieldAccessException: No field with type java.util.Map exists in class EnumProtocol.
	at com.comphenix.protocol.reflect.StructureModifier.readInternal(StructureModifier.java:216) ~[?:?]
	at com.comphenix.protocol.reflect.StructureModifier.read(StructureModifier.java:195) ~[?:?]
	at com.comphenix.protocol.injector.netty.NettyProtocolRegistry.initialize(NettyProtocolRegistry.java:60) ~[?:?]
	at com.comphenix.protocol.injector.netty.ProtocolRegistry.<init>(ProtocolRegistry.java:59) ~[?:?]
	at com.comphenix.protocol.injector.netty.NettyProtocolRegistry.<init>(NettyProtocolRegistry.java:39) ~[?:?]
	at com.comphenix.protocol.injector.packet.PacketRegistry.initialize(PacketRegistry.java:70) ~[?:?]
	at com.comphenix.protocol.injector.packet.PacketRegistry.getPacketClassFromType(PacketRegistry.java:271) ~[?:?]
	at com.comphenix.protocol.injector.packet.PacketRegistry.getPacketClassFromType(PacketRegistry.java:259) ~[?:?]
	at com.comphenix.protocol.concurrency.PacketTypeSet.getPacketClass(PacketTypeSet.java:82) ~[?:?]
	at com.comphenix.protocol.concurrency.PacketTypeSet.addType(PacketTypeSet.java:35) ~[?:?]
	at com.comphenix.protocol.injector.netty.ProtocolInjector$4.addPacketHandler(ProtocolInjector.java:385) ~[?:?]
	at com.comphenix.protocol.injector.PacketFilterManager.enablePacketFilters(PacketFilterManager.java:624) ~[?:?]
	at com.comphenix.protocol.injector.PacketFilterManager.addPacketListener(PacketFilterManager.java:390) ~[?:?]
	at me.rerere.matrix.Matrix.onEnable(Unknown Source) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:338) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:420) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:468) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:382) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.craftbukkit.v1_15_R1.CraftServer.reload(CraftServer.java:860) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.Bukkit.reload(Bukkit.java:610) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:54) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.15.jar:git-Paper-8]
	at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchCommand(CraftServer.java:740) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.PlayerConnection.handleCommand(PlayerConnection.java:1820) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:1628) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.MinecraftServer.aZ(MinecraftServer.java:1037) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:1030) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:1014) ~[patched_1.15.jar:git-Paper-8]
	at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:937) ~[patched_1.15.jar:git-Paper-8]
	at java.lang.Thread.run(Thread.java:830) [?:?]