Помогите Ошибка: an internal error occurred while attempting to perform this command?

Не могу установить скайблок на сервер. Он не работает. Перебрал кучу плагинов разных версий. При вводе команд is, island, is create... Выдает ошибку "an internal error occurred while attempting to perform this command". Что она означает и из-за чего может вылетать?
Вот список плагинов:
ASkyBlock 12 минут назад
AncientGates 06/10/19 21:04:28
AntiCMD 06/10/19 21:04:30
AntiRelog 06/10/19 21:04:30
AuthMe 6 минут назад
bStats 06/10/19 21:04:37
ChatEx 06/10/19 21:05:24
ChestCommands 06/10/19 21:05:27
ClearLag 06/10/19 21:04:40
ColoredTags 06/10/19 21:04:41
CommandCooldown 06/10/19 21:04:42
CommandNPC 06/10/19 21:06:05
Contracts 06/10/19 21:04:54
CustomJoinItems 06/10/19 21:04:55
DonatorJoinPlus 06/10/19 21:04:56
EditDrops 06/10/19 21:06:06
Essentials 06/24/19 19:43:07
EssentialsGeoIP 06/12/19 18:07:15
EssentialsXMPP 06/12/19 18:07:14
HealthBar 06/12/19 20:23:06
HolographicDisplays 06/10/19 21:06:19
LiteJoin 06/10/19 21:05:01
MOTD 06/10/19 21:05:01
MultiWorld 06/23/19 20:10:56
MythicMobs 06/15/19 16:19:29
PermissionsEx 06/25/19 14:11:28
PluginMetrics 06/10/19 21:05:04
ProtocolLib 06/26/19 16:40:11
RandomTeleport 06/10/19 21:05:06
Scavenger 06/24/19 18:02:28
Shopkeepers 06/24/19 17:12:50
SkinsRestorer 06/10/19 21:06:23
TitleManager 06/10/19 21:06:26
update 06/10/19 21:05:11
Updater 06/10/19 21:05:12
Vault 06/10/19 21:05:12
ViaVersion 06/10/19 21:05:13
WorldEdit 06/11/19 17:37:01
WorldGuard

Думал может конфликт с каким плагином, да вроде не с чем.

Вот что консоль выдает:

Admin issued server command: /is
[18:18:06 ERROR]: null
org.bukkit.command.CommandException: Cannot execute command 'is' in plugin ASkyBlock v3.0.7 - plugin is disabled.
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:38) ~[patched_1.13.2.jar:git-Paper-629]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:151) ~[patched_1.13.2.jar:git-Paper-629]
at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:734) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.PlayerConnection.handleCommand(PlayerConnection.java:1783) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1591) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:15) ~[patched_1.13.2.jar:git-Paper-629]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_212]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_212]
at net.minecraft.server.v1_13_R2.SystemUtils.a(SystemUtils.java:108) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:1018) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:439) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:940) ~[patched_1.13.2.jar:git-Paper-629]
at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:837) ~[patched_1.13.2.jar:git-Paper-629]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]

А если плагин не подходит, то ни какой не подходит. Я их уже кучу поменял.