Помогите В плагине cops and crimes начало игры выдаёт ошибку, как и попытка начать игры командой

Пытаюсь запустить этот плагин на Magma 1.12.2. Не работает команда, при попытке начать игры вылазит это:

Спойлер: Ошибка:

[/
[20:03:41] [Server thread/ERROR] [net.minecraft.network.NetHandlerPlayServer]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'cs' in plugin CounterStrike v1.19
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[PluginCommand.class:761933c-STABLE]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:153) ~[SimpleCommandMap.class:761933c-STABLE]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:689) ~[CraftServer.class:761933c-STABLE]
at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:1604) ~[pa.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:1452) ~[pa.class:?]
at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:50) ~[la.class:?]
at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:11) ~[la.class:?]
at net.minecraft.network.PacketThreadUtil.lambda$checkThreadAndEnqueue$0(PacketThreadUtil.java:14) ~[hv.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_301]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_301]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:926) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:461) [nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:865) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:737) [MinecraftServer.class:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_301]
Caused by: java.lang.NoClassDefFoundError: ro/Fr33styler/CounterStrike/Utils/MathUtils
at ro.Fr33styler.CounterStrike.Handler.Game.addRandomTeam(Game.java:302) ~[counterstrike%20(2).jar:?]
at ro.Fr33styler.CounterStrike.Handler.GameManager.addPlayer(GameManager.java:178) ~[counterstrike%20(2).jar:?]
at ro.Fr33styler.CounterStrike.Commands.onCommand(Commands.java:283) ~[counterstrike%20(2).jar:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[PluginCommand.class:761933c-STABLE]
... 15 more
]

Ошибка в файле-функции, как я понял.

Спойлер: Код файла:

[/
package ro.Fr33styler.CounterStrike.Utils;

import java.security.SecureRandom;

public class MathUtils {
private static SecureRandom random = new SecureRandom();
private static final String AB = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

public MathUtils() {
}

public static String randomString(int var0) {
StringBuilder var1 = new StringBuilder(var0);

for(int var2 = 0; var2 < var0; ++var2) {
var1.append("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".charAt(random.nextInt("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".length())));
}

return var1.toString();
}

public static SecureRandom random() {
return random;
}

public static int randomRange(int var0, int var1) {
return var0 + random.nextInt(var1 - var0 + 1);
}

public static double toDegrees(double var0) {
return var0 > 179.9D ? -180.0D + (var0 - 179.9D) : var0;
}

public static int abs(int var0) {
return var0 < 0 ? -var0 : var0;
}
}
]
Или может у кого-то есть нормальная версия плагина, или подобный?