Dark oak / crimson sign crash

[NoWauu]

Error occurs when trying to lock a block with a dark oak or a crimson sign.
Error on changing the sign's text color

org.bukkit.event.EventException: null
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[arclight:arclight-1.16.5-1.0.25-SNAPSHOT-aeef36e9] {re:mixin,re:classloading}
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[arclight:arclight-1.16.5-1.0.25-SNAPSHOT-aeef36e9] {re:classloading,re:mixin}
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[arclight:arclight-1.16.5-1.0.25-SNAPSHOT-aeef36e9] {re:classloading,re:mixin}
at org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactoryMixin.java:494) ~[arclight:arclight-1.16.5-1.0.25-SNAPSHOT-aeef36e9] {re:mixin,re:classloading,pl:mixin:A,pl:arclight_implementer:switch,pl:arclight_implementer:A}
at net.minecraft.server.management.PlayerInteractionManager.func_219441_a(PlayerInteractionManagerMixin.java:747) ~[?:?] {re:mixin,re:computing_frames,re:classloading,pl:mixin:APP:mixins.arclight.core.json:server.management.PlayerInteractionManagerMixin,pl:mixin:APP:mixins.arclight.impl.forge.optimization.json:realtime.PlayerInteractionManagerMixin_Realtime,pl:mixin:A}
at net.minecraft.network.play.ServerPlayNetHandler.func_184337_a(ServerPlayNetHandlerMixin.java:958) ~[?:?] {re:mixin,re:classloading,pl:mixin:APP:mixins.arclight.core.json:network.play.ServerPlayNetHandlerMixin,pl:mixin:APP:vanishmod.mixins.json:MixinServerPlayNetHandler,pl:mixin:A}
at net.minecraft.network.play.client.CPlayerTryUseItemOnBlockPacket.func_148833_a(CPlayerTryUseItemOnBlockPacketMixin.java:36) ~[?:?] {re:mixin,re:classloading,pl:mixin:APP:mixins.arclight.core.json:network.play.client.CPlayerTryUseItemOnBlockPacketMixin,pl:mixin:A}
at net.minecraft.network.play.client.CPlayerTryUseItemOnBlockPacket.func_148833_a(CPlayerTryUseItemOnBlockPacketMixin.java:10) ~[?:?] {re:mixin,re:classloading,pl:mixin:APP:mixins.arclight.core.json:network.play.client.CPlayerTryUseItemOnBlockPacketMixin,pl:mixin:A}
at net.minecraft.network.PacketThreadUtil.md834ddb$lambda$checkThreadAndEnqueue$0$0(PacketThreadUtilMixin.java:536) ~[?:?] {re:mixin,re:classloading,pl:mixin:APP:mixins.arclight.core.json:network.PacketThreadUtilMixin,pl:mixin:A}
at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18) ~[?:?] {re:classloading}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServerMixin.java:734) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServerMixin.java:159) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServerMixin.java:717) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServerMixin.java:711) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServerMixin.java:697) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServerMixin.java:1921) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServerMixin.java:232) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:server.MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at java.lang.Thread.run(Thread.java:829) [?:?] {}
Caused by: java.lang.NullPointerException
at net.minecraft.tileentity.TileEntity.func_195044_w(TileEntityMixin.java:122) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:tileentity.TileEntityMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.tileentity.SignTileEntity.func_214068_a(SignTileEntityMixin.java:159) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.arclight.core.json:tileentity.SignTileEntityMixin,pl:mixin:A}
at org.bukkit.craftbukkit.v1_16_R3.block.CraftSign.setColor(CraftSign.java:67) ~[arclight:arclight-1.16.5-1.0.25-SNAPSHOT-aeef36e9] {re:mixin,re:classloading}
at me.crafter.mc.lockettepro.Utils.putSignOn(Utils.java:60) ~[?:?] {re:classloading,re:classloading,re:classloading,re:classloading,re:classloading}
at me.crafter.mc.lockettepro.BlockPlayerListener.onPlayerQuickLockChest(BlockPlayerListener.java:74) ~[?:?] {re:classloading,re:classloading,re:classloading,re:classloading,re:classloading}
... 22 more```

Thanks :)