Error on Mohist 1.12.2

[Agrrox]

Hello when I try to generate text I get this error:

[12:15:05 INFO]: Agrro issued server command: /skyjot write b:SANDSTONE ~ ~ ~ Hello\nWorld
[12:15:05 ERROR]: null
 org.bukkit.command.CommandException: Unhandled exception executing command 'skyjot' in plugin SkyJot v2.0.0-SNAPSHOT
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[PluginCommand.class:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:156) ~[SimpleCommandMap.class:?]
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:752) ~[CraftServer.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:1590) ~[pa.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:1429) ~[pa.class:?]
	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:46) ~[la.class:?]
	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:9) ~[la.class:?]
	at net.minecraft.network.PacketThreadUtil.lambda$checkThreadAndEnqueue$0(PacketThreadUtil.java:16) ~[hv.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_252]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_252]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:840) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:461) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:778) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:624) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_252]
Caused by: java.lang.NoSuchMethodError: org.bukkit.block.Block.getBlockData()Lorg/bukkit/block/data/BlockData;
	at com.allocinit.skyjot.Undo.saveLocation(Undo.java:17) ~[?:?]
	at com.allocinit.skyjot.WriteCommand.doCommand(WriteCommand.java:121) ~[?:?]
	at com.allocinit.bukkit.CommandPlugin.onCommand(CommandPlugin.java:45) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:43) ~[PluginCommand.class:?]
	... 15 more

to replicate:

1. download mohist 1.12.2 (https://mohistmc.com/)
2. install Skyjot plugin
3. execute /skyjot write b:SANDSTONE ~ ~ ~ Hello\nWorld