#FMC00-211A - FCPG plugin unable to detect player languages #11

Error information below.

[03:03:36 INFO]: [FastChunkPregenerator] [ACF] Can't read players locale, you will be unable to automatically detect players language. Only Bukkit 1.7+ is supported for this.
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] java.lang.NoSuchFieldException: locale
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at java.base/java.lang.Class.getDeclaredField(Class.java:2782)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at io.papermc.reflectionrewriter.runtime.AbstractDefaultRulesReflectionProxy.getDeclaredField(AbstractDefaultRulesReflectionProxy.java:90)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at io.papermc.paper.pluginremap.reflect.PaperReflectionHolder.getDeclaredField(Unknown Source)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at FastChunkPregenerator-2.0.8-SNAPSHOT.jar//com.gestankbratwurst.fastchunkpregen.commands.BukkitCommandManager.readPlayerLocale(BukkitCommandManager.java:317)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at FastChunkPregenerator-2.0.8-SNAPSHOT.jar//com.gestankbratwurst.fastchunkpregen.commands.ACFBukkitListener.onPlayerJoin(ACFBukkitListener.java:57)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:44)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:131)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:628)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.players.PlayerList.placeNewPlayer(PlayerList.java:350)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.network.ServerConfigurationPacketListenerImpl.handleConfigurationFinished(ServerConfigurationPacketListenerImpl.java:173)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.network.protocol.configuration.ServerboundFinishConfigurationPacket.handle(ServerboundFinishConfigurationPacket.java:22)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.network.protocol.configuration.ServerboundFinishConfigurationPacket.handle(ServerboundFinishConfigurationPacket.java:13)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:55)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.TickTask.run(TickTask.java:18)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:154)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1576)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:207)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:128)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1553)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1546)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:138)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1497)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1507)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1343)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:339)
[03:03:36 INFO]: [FastChunkPregenerator] [ACF] at java.base/java.lang.Thread.run(Thread.java:1583)