[06:54:41 WARN]: Here's the stacktrace:
[06:54:41 WARN]: java.lang.AbstractMethodError
[06:54:41 WARN]:        at com.laytonsmith.core.Script.eval(Script.java:405)
[06:54:41 WARN]:        at com.laytonsmith.core.Script.eval(Script.java:371)
[06:54:41 WARN]:        at com.laytonsmith.core.Script.seval(Script.java:247)
[06:54:41 WARN]:        at com.laytonsmith.core.functions.ControlFlow$_if.execs(ControlFlow.java:99)
[06:54:41 WARN]:        at com.laytonsmith.core.Script.eval(Script.java:361)
[06:54:41 WARN]:        at com.laytonsmith.core.Script.eval(Script.java:371)
[06:54:41 WARN]:        at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:2633)
[06:54:41 WARN]:        at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:2591)
[06:54:41 WARN]:        at com.laytonsmith.core.events.AbstractEvent.execute(AbstractEvent.java:129)
[06:54:41 WARN]:        at com.laytonsmith.core.events.BoundEvent.execute(BoundEvent.java:302)
[06:54:41 WARN]:        at com.laytonsmith.core.events.BoundEvent.trigger(BoundEvent.java:258)
[06:54:41 WARN]:        at com.laytonsmith.core.events.EventUtils.FireListeners(EventUtils.java:307)
[06:54:41 WARN]:        at com.laytonsmith.core.events.EventUtils.TriggerListener(EventUtils.java:294)
[06:54:41 WARN]:        at com.laytonsmith.abstraction.bukkit.events.drivers.BukkitPlayerListener.onPlayerInteract(BukkitPlayerListener.java:113)
[06:54:41 WARN]:        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor241.execute(Unknown Source)
[06:54:41 WARN]:        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69)
[06:54:41 WARN]:        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80)
[06:54:41 WARN]:        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
[06:54:41 WARN]:        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:545)
[06:54:41 WARN]:        at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:454)
[06:54:41 WARN]:        at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:421)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.PlayerInteractManager.a(PlayerInteractManager.java:136)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:1387)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.PacketPlayInBlockDig.a(SourceFile:40)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.PacketPlayInBlockDig.a(SourceFile:10)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java:1036)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:1029)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:1013)
[06:54:41 WARN]:        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:936)
[06:54:41 WARN]:        at java.lang.Thread.run(Thread.java:748)