[22:58:17 ERROR]: Could not pass event PlayerInteractEvent to RCRandomBoxes v1.0
org.bukkit.event.EventException: null
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:72) ~[patched_1.13.2.jar:git-Paper-522]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.13.2.jar:git-Paper-522]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.13.2.jar:git-Paper-522]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:513) ~[patched_1.13.2.jar:git-Paper-522]
        at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:320) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.PlayerInteractManager.a(PlayerInteractManager.java:466) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1362) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.PacketPlayInUseItem.a(PacketPlayInUseItem.java:37) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.PacketPlayInUseItem.a(PacketPlayInUseItem.java:5) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:15) ~[patched_1.13.2.jar:git-Paper-522]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_191]
        at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_191]
        at net.minecraft.server.v1_13_R2.SystemUtils.a(SystemUtils.java:108) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:1011) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:439) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:938) ~[patched_1.13.2.jar:git-Paper-522]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:836) ~[patched_1.13.2.jar:git-Paper-522]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
Caused by: java.lang.NullPointerException
        at redlimerl.spigot.randombox.SpawnBox.CloseInv(SpawnBox.java:90) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor15.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[patched_1.13.2.jar:git-Paper-522]
        ... 17 more