Plugin not working on paper 1.21.3

[ChunkyDuck8223]

Hello, the plugin seems to not generate plugin default files. My server is running Geyser, AxGraves, BackpackPlus, BetterChairs, Chunky, floodgate, HuskHomes, LagFixer, ViaBackwards, Viaversion, voicechat, worldguard, Worldedit (All up to date). Elite mobs also gave me a similar warning. I'm not sure what to do

EliteMobs
[17:42:26 WARN]: [EliteMobs] Incompatible Minecraft version detected! [3] Package: org.bukkit.craftbukkit version: 1.21.3-44-85bfdc0 (MC: 1.21.3) and attempted to get v1_21_ ! Report this to the developer.
[17:42:26 WARN]: [EliteMobs] Server version is null.

BetterStructures
[17:42:39 WARN]: [BetterStructures] Failed to read plugin files for generators ! This is very bad, warn the developer!
[17:42:39 WARN]: java.lang.ClassCastException: class org.bukkit.craftbukkit.block.CraftBiome cannot be cast to class java.lang.Enum (org.bukkit.craftbukkit.block.CraftBiome is in unnamed module of loader java.net.URLClassLoader @17d10166; java.lang.Enum is in module java.base of loader 'bootstrap')
[17:42:39 WARN]: at java.base/java.util.Arrays$ArrayList.forEach(Arrays.java:4266)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.magmacore.config.CustomConfigFields.enumListToStringListConverter(CustomConfigFields.java:183)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.magmacore.config.CustomConfigFields.processEnumList(CustomConfigFields.java:157)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.config.generators.GeneratorConfigFields.processConfigFields(GeneratorConfigFields.java:76)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.magmacore.config.CustomConfig.initialize(CustomConfig.java:159)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.magmacore.config.CustomConfig.fileInitializer(CustomConfig.java:108)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.magmacore.config.CustomConfig.directoryCrawler(CustomConfig.java:94)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.magmacore.config.CustomConfig.(CustomConfig.java:78)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.config.generators.GeneratorConfig.(GeneratorConfig.java:13)
[17:42:39 WARN]: at BetterStructures.jar//com.magmaguy.betterstructures.BetterStructures.onEnable(BetterStructures.java:54)
[17:42:39 WARN]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:288)
[17:42:39 WARN]: at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202)
[17:42:39 WARN]: at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109)
[17:42:39 WARN]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520)
[17:42:39 WARN]: at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:643)
[17:42:39 WARN]: at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:592)
[17:42:39 WARN]: at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:767)
[17:42:39 WARN]: at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:529)
[17:42:39 WARN]: at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:326)
[17:42:39 WARN]: at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1233)
[17:42:39 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:339)
[17:42:39 WARN]: at java.base/java.lang.Thread.run(Thread.java:1575)
[17:42:39 ERROR]: Error occurred while enabling BetterStructures v1.7.2 (Is it up to date?)
java.util.ConcurrentModificationException: null
at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1096) ~[?:?]
at java.base/java.util.ArrayList$Itr.next(ArrayList.java:1050) ~[?:?]
at BetterStructures.jar/com.magmaguy.betterstructures.magmacore.config.CustomConfig.fileInitializer(CustomConfig.java:103) ~[BetterStructures.jar:?]
at BetterStructures.jar/com.magmaguy.betterstructures.magmacore.config.CustomConfig.directoryCrawler(CustomConfig.java:94) ~[BetterStructures.jar:?]
at BetterStructures.jar/com.magmaguy.betterstructures.magmacore.config.CustomConfig.(CustomConfig.java:78) ~[BetterStructures.jar:?]
at BetterStructures.jar/com.magmaguy.betterstructures.config.generators.GeneratorConfig.(GeneratorConfig.java:13) ~[BetterStructures.jar:?]
at BetterStructures.jar/com.magmaguy.betterstructures.BetterStructures.onEnable(BetterStructures.java:54) ~[BetterStructures.jar:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:288) ~[paper-api-1.21.3-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520) ~[paper-api-1.21.3-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:643) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:592) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:767) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:529) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:326) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1233) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:339) ~[paper-1.21.3.jar:1.21.3-44-85bfdc0]
at java.base/java.lang.Thread.run(Thread.java:1575) ~[?:?]

[ShoyebOP]

Same for me😢

[wkurumi]

+1