[20:46:04 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'addi
tions' in plugin Additions v1.0.9
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[pat
ched_1.14.4.jar:git-Paper-210]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:15
9) ~[patched_1.14.4.jar:git-Paper-210]
        at org.bukkit.craftbukkit.v1_14_R1.CraftServer.dispatchCommand(CraftServ
er.java:739) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.PlayerConnection.handleCommand(PlayerCo
nnection.java:1800) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.jav
a:1608) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.PacketPlayInChat.a(PacketPlayInChat.jav
a:47) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.PacketPlayInChat.a(PacketPlayInChat.jav
a:5) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$ensureMain
Thread$0(PlayerConnectionUtils.java:23) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) ~[patched_1
.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(IAsyncTas
kHandler.java:136) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(
SourceFile:23) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(IAsyncTas
kHandler.java:109) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java
:1029) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftSe
rver.java:1022) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(IAsyncTask
Handler.java:95) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:
1158) ~[patched_1.14.4.jar:git-Paper-210]
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.jav
a:925) ~[patched_1.14.4.jar:git-Paper-210]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
Caused by: java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(Unknown Source) ~[?:1.8.0_221
]
        at java.util.HashMap$KeyIterator.next(Unknown Source) ~[?:1.8.0_221]
        at me.gaagjescraft.network.team.advancedevents.files.NameTagsFile.reload
Schedulers(NameTagsFile.java:132) ~[?:?]
        at me.gaagjescraft.network.team.advancedevents.commands.additions.Reload
Cmd.run(ReloadCmd.java:45) ~[?:?]
        at me.gaagjescraft.network.team.advancedevents.commands.BaseCmd.processC
ommand(BaseCmd.java:38) ~[?:?]
        at me.gaagjescraft.network.team.advancedevents.commands.additions.ACmdLi
stener.onCommand(ACmdListener.java:54) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[pat
ched_1.14.4.jar:git-Paper-210]
        ... 17 more