TallNether console error | PaperMC #84, Minecraft 1.15.2

[13:18:29 ERROR]: [Minecraft] Could not pass event WorldInitEvent to TallNether v2.3
java.lang.NoSuchFieldError: Y
        at com.minefit.xerxestireiron.tallnether.v1_15_R1.Decorators.setNewDecorators(Decorators.java:166) ~[?:?]
        at com.minefit.xerxestireiron.tallnether.v1_15_R1.Decorators.setDecorators(Decorators.java:66) ~[?:?]
        at com.minefit.xerxestireiron.tallnether.v1_15_R1.Decorators.set(Decorators.java:55) ~[?:?]
        at com.minefit.xerxestireiron.tallnether.v1_15_R1.LoadHell.overrideDecorators(LoadHell.java:35) ~[?:?]
        at com.minefit.xerxestireiron.tallnether.ManageHell.overrideGenerator(ManageHell.java:73) ~[?:?]
        at com.minefit.xerxestireiron.tallnether.TallNether.prepareWorld(TallNether.java:74) ~[?:?]
        at com.minefit.xerxestireiron.tallnether.TallNether.onWorldInit(TallNether.java:57) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor2.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.15.2.jar:git-Paper-84]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.15.2.jar:git-Paper-84]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.15.2.jar:git-Paper-84]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:561) ~[patched_1.15.2.jar:git-Paper-84]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:453) ~[patched_1.15.2.jar:git-Paper-84]
        at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:298) ~[patched_1.15.2.jar:git-Paper-84]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:885) ~[patched_1.15.2.jar:git-Paper-84]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]