WORLDEDIT-3500 - Reported by Bronzeteufel

I don't really know what's going on here.
I'm running the latest paper spigot and the latest WorldEdit version.

[01:11:23] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
at java.util.PriorityQueue.siftDownComparable(PriorityQueue.java:701) ~[?:1.8.0_101]
at java.util.PriorityQueue.siftDown(PriorityQueue.java:689) ~[?:1.8.0_101]
at java.util.PriorityQueue.poll(PriorityQueue.java:595) ~[?:1.8.0_101]
at com.sk89q.worldedit.world.AbstractWorld$1.run(AbstractWorld.java:202) ~[?:?]
at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:58) ~[patched_1.10.2.jar:git-Paper-842]
at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:352) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:781) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:404) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:725) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:624) [patched_1.10.2.jar:git-Paper-842]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:24] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[01:11:25] [Server thread/WARN]: [WorldEdit] Task #22320447 for WorldEdit v6.1.3;7a097ca generated an exception
java.lang.NullPointerException
[....]

Comment by wizjany

reproduction steps? the only thing that seems to call that method is the superpick tool, but i wasn't able to reproduce with that