[12:07:04 ERROR]: An unexpected error while handling a WorldEdit command
java.lang.ArrayIndexOutOfBoundsException: 16
        at com.boydti.fawe.beta.implementation.blocks.CharBlocks.get(CharBlocks.java:114) ~[?:?]
        at com.boydti.fawe.beta.implementation.blocks.CharBlocks.getBlock(CharBlocks.java:108) ~[?:?]
        at com.boydti.fawe.beta.implementation.chunk.ChunkHolder$2.getBlock(ChunkHolder.java:328) ~[?:?]
        at com.boydti.fawe.beta.implementation.chunk.ChunkHolder.getBlock(ChunkHolder.java:781) ~[?:?]
        at com.boydti.fawe.beta.implementation.chunk.ChunkHolder$4.getBlock(ChunkHolder.java:524) ~[?:?]
        at com.boydti.fawe.beta.implementation.chunk.ChunkHolder.getBlock(ChunkHolder.java:781) ~[?:?]
        at com.boydti.fawe.beta.implementation.IChunkExtent.getBlock(IChunkExtent.java:44) ~[?:?]
        at com.sk89q.worldedit.extent.AbstractDelegateExtent.getBlock(AbstractDelegateExtent.java:149) ~[?:?]
        at com.sk89q.worldedit.extent.AbstractDelegateExtent.getBlock(AbstractDelegateExtent.java:149) ~[?:?]
        at com.sk89q.worldedit.extent.AbstractDelegateExtent.getBlock(AbstractDelegateExtent.java:86) ~[?:?]
        at com.sk89q.worldedit.extent.PassthroughExtent.getBlock(PassthroughExtent.java:186) ~[?:?]
        at com.sk89q.worldedit.math.BlockVector3.getBlock(BlockVector3.java:721) ~[?:?]
        at com.sk89q.worldedit.function.mask.ExistingBlockMask.test(ExistingBlockMask.java:43) ~[?:?]
        at com.sk89q.worldedit.function.mask.AbstractExtentMask.test(AbstractExtentMask.java:46) ~[?:?]
        at com.sk89q.worldedit.function.GroundFunction.isGround(GroundFunction.java:80) ~[?:?]
        at com.sk89q.worldedit.function.visitor.LayerVisitor.resume(LayerVisitor.java:101) ~[?:?]
        at com.sk89q.worldedit.function.operation.Operations.completeLegacy(Operations.java:57) ~[?:?]
        at com.sk89q.worldedit.EditSession.makeForest(EditSession.java:2293) ~[?:?]
        at com.sk89q.worldedit.command.RegionCommands.forest(RegionCommands.java:718) ~[?:?]
        at com.sk89q.worldedit.command.RegionCommandsRegistration.cmd$_forest(RegionCommandsRegistration.java:932) ~[?:?]
        at org.enginehub.piston.CommandManager.execute(CommandManager.java:157) ~[?:?]
        at com.sk89q.worldedit.extension.platform.PlatformCommandManager.lambda$handleCommandOnCurrentThread$15(PlatformCommandManager.java:679) ~[?:?]
        at com.sk89q.worldedit.extension.platform.PlatformCommandManager.handleCommandTask(PlatformCommandManager.java:695) ~[?:?]
        at com.sk89q.worldedit.extension.platform.PlatformCommandManager.handleCommandOnCurrentThread(PlatformCommandManager.java:681) ~[?:?]
        at com.sk89q.worldedit.extension.platform.PlatformCommandManager.lambda$handleCommand$13(PlatformCommandManager.java:651) ~[?:?]
        at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftTask.run(CraftTask.java:99) ~[patched_1.15.2.jar:git-Paper-350]
        at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:54) ~[patched_1.15.2.jar:git-Paper-350]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[patched_1.15.2.jar:git-Paper-350]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_231]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_231]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_231]