AR generates a NullPointerException #234

[22:23:00] [Server thread/WARN]: [AutoReferee] Task #6343391 for AutoReferee v2.8.2 generated an exception
java.lang.NullPointerException
    at org.mctourney.autoreferee.AutoRefMatch.addEvent(AutoRefMatch.java:3435) ~[?:?]
    at org.mctourney.autoreferee.AutoRefPlayer.updateCarrying(AutoRefPlayer.java:894) ~[?:?]
    at org.mctourney.autoreferee.listeners.ObjectiveTracker$InventoryChangeTask.run(ObjectiveTracker.java:195) ~[?:?]
    at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) ~[server.jar:git-Spigot-db6de12-d3e0b6f]
    at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [server.jar:git-Spigot-db6de12-d3e0b6f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723) [server.jar:git-Spigot-db6de12-d3e0b6f]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [server.jar:git-Spigot-db6de12-d3e0b6f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [server.jar:git-Spigot-db6de12-d3e0b6f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [server.jar:git-Spigot-db6de12-d3e0b6f]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66-internal]