[16:09:41] [Server thread/ERROR]: Could not pass event PlayerQuitEvent to ChestShop v3.8.13
org.bukkit.event.EventException
at com.destroystokyo.paper.event.executor.StaticMethodHandleEventExecutor.execute(StaticMethodHandleEventExecutor.java:36) ~[patched_1.10.2.jar:git-Paper-842]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:74) ~[patched_1.10.2.jar:git-Paper-842]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.10.2.jar:git-Paper-842]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [patched_1.10.2.jar:git-Paper-842]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.PlayerList.disconnect(PlayerList.java:408) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:1069) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.NetworkManager.handleDisconnection(NetworkManager.java:318) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.ServerConnection.c(ServerConnection.java:186) [patched_1.10.2.jar:git-Paper-842]
at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:886) [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_102]
Caused by: java.lang.NullPointerException
at com.google.common.collect.HashBiMap.delete(HashBiMap.java:128) ~[patched_1.10.2.jar:git-Paper-842]
at com.google.common.collect.HashBiMap.access$200(HashBiMap.java:52) ~[patched_1.10.2.jar:git-Paper-842]
at com.google.common.collect.HashBiMap$Inverse.remove(HashBiMap.java:528) ~[patched_1.10.2.jar:git-Paper-842]
at com.Acrobot.ChestShop.UUIDs.NameManager.dropUsername(NameManager.java:220) ~[?:?]
at com.Acrobot.ChestShop.Listeners.Player.PlayerLeave.onPlayerLeave(PlayerLeave.java:20) ~[?:?]
at com.destroystokyo.paper.event.executor.StaticMethodHandleEventExecutor.execute(StaticMethodHandleEventExecutor.java:34) ~[patched_1.10.2.jar:git-Paper-842]
... 13 more