Group / game sign NPE

[Sataniel98]

[23:38:30 ERROR]: Could not pass event PlayerInteractEvent to DungeonsXL v0.16-SNAPSHOT-635
org.bukkit.event.EventException: null
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:72) ~[PaperSpigot.jar:git-Paper-1416]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[PaperSpigot.jar:git-Paper-1416]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[PaperSpigot.jar:git-Paper-1416]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:515) ~[PaperSpigot.jar:git-Paper-1416]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:500) ~[PaperSpigot.jar:git-Paper-1416]
        at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:236) ~[PaperSpigot.jar:git-Paper-1416]
        at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:203) ~[PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.PlayerInteractManager.a(PlayerInteractManager.java:109) ~[PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:914) ~[PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.PacketPlayInBlockDig.a(SourceFile:40) ~[PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.PacketPlayInBlockDig.a(SourceFile:10) ~[PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[PaperSpigot.jar:git-Paper-1416]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_162]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_162]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:843) [PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:427) [PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:767) [PaperSpigot.jar:git-Paper-1416]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:665) [PaperSpigot.jar:git-Paper-1416]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_162]
Caused by: java.lang.NullPointerException
        at de.erethon.dungeonsxl.player.DGroup.setDungeon(DGroup.java:423) ~[?:?]
        at de.erethon.dungeonsxl.player.DGroup.<init>(DGroup.java:167) ~[?:?]
        at de.erethon.dungeonsxl.player.DGroup.<init>(DGroup.java:146) ~[?:?]
        at de.erethon.dungeonsxl.player.DGroup.<init>(DGroup.java:142) ~[?:?]
        at de.erethon.dungeonsxl.global.GroupSign.onPlayerInteract(GroupSign.java:146) ~[?:?]
        at de.erethon.dungeonsxl.global.GlobalProtectionListener.onInteract(GlobalProtectionListener.java:210) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor281.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[PaperSpigot.jar:git-Paper-1416]
        ... 19 more