[16:35:39 ERROR]: [Orebfuscator4] Unhandled exception number 256 occured in onPacketSending(PacketEvent) for Orebfuscator4
java.lang.NoSuchMethodError: net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkIfLoaded(II)Lnet/minecraft/server/v1_9_R1/Chunk;
        at com.lishid.orebfuscator.internal.MinecraftInternals.getBlockData(MinecraftInternals.java:98) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.lishid.orebfuscator.internal.MinecraftInternals.getBlockId(MinecraftInternals.java:90) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.lishid.orebfuscator.obfuscation.Calculations.areAjacentBlocksTransparent(Calculations.java:328) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.lishid.orebfuscator.obfuscation.Calculations.areAjacentBlocksTransparent(Calculations.java:356) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.lishid.orebfuscator.obfuscation.Calculations.obfuscate(Calculations.java:151) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.lishid.orebfuscator.obfuscation.Calculations.obfuscateOrUseCache(Calculations.java:57) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.lishid.orebfuscator.hook.ProtocolLibHook$1.onPacketSending(ProtocolLibHook.java:58) ~[orebfuscator-4.0.9-SNAPSHOT.jar:?]
        at com.comphenix.protocol.injector.SortedPacketListenerList.invokeSendingListener(SortedPacketListenerList.java:195) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.SortedPacketListenerList.invokePacketSending(SortedPacketListenerList.java:149) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.PacketFilterManager.handlePacket(PacketFilterManager.java:608) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.PacketFilterManager.invokePacketSending(PacketFilterManager.java:584) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ProtocolInjector.packetQueued(ProtocolInjector.java:309) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ProtocolInjector.onPacketSending(ProtocolInjector.java:269) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ChannelInjector.processSending(ChannelInjector.java:396) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ChannelInjector.access$500(ChannelInjector.java:77) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ChannelInjector$5.handleScheduled(ChannelInjector.java:362) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ChannelInjector$5.onMessageScheduled(ChannelInjector.java:330) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.ChannelProxy$2.schedulingRunnable(ChannelProxy.java:127) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at com.comphenix.protocol.injector.netty.EventLoopProxy.execute(EventLoopProxy.java:95) [ProtocolLib.jar:4.0.0-SNAPSHOT-b273]
        at net.minecraft.server.v1_9_R1.NetworkManager.a(NetworkManager.java:193) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.NetworkManager.sendPacket(NetworkManager.java:142) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.PlayerConnection.sendPacket(PlayerConnection.java:1104) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.PlayerChunk.b(PlayerChunk.java:136) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.PlayerChunkMap.flush(PlayerChunkMap.java:185) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.WorldServer.doTick(WorldServer.java:257) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:867) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:404) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:721) [patched_1.9.2.jar:git-Paper-698]
        at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:620) [patched_1.9.2.jar:git-Paper-698]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_73]