API: deleteWorld() throws

[u9g]

Describe the issue
throw when deleting world (loader is "file")
Spigot version
paper 1.18.2
Plugin version
latest commit as of now on 1.18 branch
How to reproduce
run this code:

    private static void deleteWorldFor(Player player) {
        try {
            IslandManager.INSTANCE.slimePlugin.deleteWorld("my-world");
        } catch (Exception e) {
            // ignore
        }
    }

Crash reports (if available)

[15:55:39 INFO]: U9G issued server command: /is delete
[15:55:39 INFO]: [SlimeWorldManager] [STDOUT] Deleting world.. 68c0d601-be05-42a1-a1f4-aa7d11e503b3_mainworld.
[15:55:39 WARN]: Nag author(s): '[Grinderwolf, Paul19988, Jools, SoapTurtle, Gerolmed, b0ykoe]' of 'SlimeWorldManager' about their usage of System.out/err.print. Please use your plugin's logger instead (JavaPlugin#getLogger).
[15:55:39 WARN]: java.io.IOException: Stream Closed
[15:55:39 WARN]: 	at java.base/java.io.RandomAccessFile.seek0(Native Method)
[15:55:39 WARN]: 	at java.base/java.io.RandomAccessFile.seek(RandomAccessFile.java:590)
[15:55:39 WARN]: 	at slimeworldmanager-plugin.jar//com.grinderwolf.swm.plugin.loaders.file.FileLoader.deleteWorld(FileLoader.java:164)
[15:55:39 WARN]: 	at IslandManager-1.0-SNAPSHOT.jar//com.github.u9g.islandmanager.command.IslandCommand.deleteWorldFor(IslandCommand.java:76)
[15:55:39 WARN]: 	at IslandManager-1.0-SNAPSHOT.jar//com.github.u9g.islandmanager.command.IslandCommand.onIslandDelete(IslandCommand.java:54)
[15:55:39 WARN]: 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[15:55:39 WARN]: 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
[15:55:39 WARN]: 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[15:55:39 WARN]: 	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
[15:55:39 WARN]: 	at IslandManager-1.0-SNAPSHOT.jar//redempt.redlib.commandmanager.Command.runHook(Command.java:799)
[15:55:39 WARN]: 	at IslandManager-1.0-SNAPSHOT.jar//redempt.redlib.commandmanager.Command.execute(Command.java:697)
[15:55:39 WARN]: 	at IslandManager-1.0-SNAPSHOT.jar//redempt.redlib.commandmanager.Command.execute(Command.java:709)
[15:55:39 WARN]: 	at IslandManager-1.0-SNAPSHOT.jar//redempt.redlib.commandmanager.Command$1.execute(Command.java:444)
[15:55:39 WARN]: 	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159)
[15:55:39 WARN]: 	at org.bukkit.craftbukkit.v1_18_R2.CraftServer.dispatchCommand(CraftServer.java:905)
[15:55:39 WARN]: 	at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2306)
[15:55:39 WARN]: 	at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2117)
[15:55:39 WARN]: 	at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2098)
[15:55:39 WARN]: 	at net.minecraft.network.protocol.game.PacketPlayInChat.a(PacketPlayInChat.java:46)
[15:55:39 WARN]: 	at net.minecraft.network.protocol.game.PacketPlayInChat.a(PacketPlayInChat.java:6)
[15:55:39 WARN]: 	at net.minecraft.network.protocol.PlayerConnectionUtils.lambda$ensureRunningOnSameThread$1(PlayerConnectionUtils.java:51)
[15:55:39 WARN]: 	at net.minecraft.server.TickTask.run(TickTask.java:18)
[15:55:39 WARN]: 	at net.minecraft.util.thread.IAsyncTaskHandler.d(IAsyncTaskHandler.java:153)
[15:55:39 WARN]: 	at net.minecraft.util.thread.IAsyncTaskHandlerReentrant.d(IAsyncTaskHandlerReentrant.java:23)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1399)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:188)
[15:55:39 WARN]: 	at net.minecraft.util.thread.IAsyncTaskHandler.y(IAsyncTaskHandler.java:126)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.be(MinecraftServer.java:1376)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.y(MinecraftServer.java:1369)
[15:55:39 WARN]: 	at net.minecraft.util.thread.IAsyncTaskHandler.c(IAsyncTaskHandler.java:136)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:1347)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1229)
[15:55:39 WARN]: 	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:315)
[15:55:39 WARN]: 	at java.base/java.lang.Thread.run(Thread.java:833)