[18:05:20 WARN]: [Dungeons] Task #10400 for Dungeons v1.0.4 generated an exception
java.lang.NullPointerException: Cannot invoke "org.bukkit.entity.LivingEntity.remove()" because "e" is null
        at org.denizen.dungeons.runnables.SpawnerManager.run(SpawnerManager.java:53) ~[Dungeons-1.0.4.jar:?]
        at org.bukkit.craftbukkit.v1_18_R1.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.18.1.jar:git-Paper-177]
        at org.bukkit.craftbukkit.v1_18_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:483) ~[paper-1.18.1.jar:git-Paper-177]
        at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1547) ~[paper-1.18.1.jar:git-Paper-177]
        at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:480) ~[paper-1.18.1.jar:git-Paper-177]
        at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1470) ~[paper-1.18.1.jar:git-Paper-177]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1264) ~[paper-1.18.1.jar:git-Paper-177]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:317) ~[paper-1.18.1.jar:git-Paper-177]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]