[01:08:33 INFO]: [Citizens] Enabling Citizens v2.0.38-SNAPSHOT (build 3781)
[01:08:33 INFO]: [Citizens] Using mojmapped server, avoiding server package checks
[01:08:33 ERROR]: [Citizens] Could not fetch NMS field bT: [[bT.
[01:08:33 ERROR]: [Citizens] Could not fetch NMS field bT: [[null.
[01:08:33 ERROR]: Error occurred while enabling Citizens v2.0.38-SNAPSHOT (build 3781) (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_21_R4/boss/CraftBossBar
        at Citizens (23).jar/net.citizensnpcs.nms.v1_21_R4.util.NMSImpl.<clinit>(NMSImpl.java:2744) ~[Citizens (23).jar:?]
        at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
        at java.base/java.lang.Class.forName(Class.java:534) ~[?:?]
        at java.base/java.lang.Class.forName(Class.java:513) ~[?:?]
        at io.papermc.reflectionrewriter.runtime.AbstractDefaultRulesReflectionProxy.forName(AbstractDefaultRulesReflectionProxy.java:68) ~[reflection-rewriter-runtime-0.0.3.jar:?]
        at io.papermc.paper.pluginremap.reflect.PaperReflectionHolder.forName(Unknown Source) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at Citizens (23).jar/net.citizensnpcs.api.util.SpigotUtil.lambda$getMinecraftPackage$1(SpigotUtil.java:175) ~[Citizens (23).jar:?]
        at Citizens (23).jar/net.citizensnpcs.api.util.SpigotUtil.getMinecraftPackage(SpigotUtil.java:180) ~[Citizens (23).jar:?]
        at Citizens (23).jar/net.citizensnpcs.Citizens.onEnable(Citizens.java:326) ~[Citizens (23).jar:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:280) ~[purpur-api-1.21.4-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520) ~[purpur-api-1.21.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:671) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:620) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:746) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:491) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:365) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1178) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:313) ~[purpur-1.21.4.jar:1.21.4-2416-51aafbc]
        at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.v1_21_R4.boss.CraftBossBar
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:197) ~[purpur-api-1.21.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:164) ~[purpur-api-1.21.4-R0.1-SNAPSHOT.jar:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?]
        ... 21 more
[01:08:33 INFO]: [Citizens] Disabling Citizens v2.0.38-SNAPSHOT (build 3781)