[21:19:08 ERROR]: Error occurred while disabling ItemsAdder v4.0.17
java.lang.NoClassDefFoundError: Could not initialize class itemsadder.m.axy
        at ItemsAdder_4.0.17.jar//dev.lone.itemsadder.Main.onDisable(SourceFile:770) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:285) ~[paper-api-1.21.11-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.disablePlugin(PaperPluginInstanceManager.java:242) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.disablePlugin(PaperPluginManagerImpl.java:114) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:550) ~[paper-api-1.21.11-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:211) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520) ~[paper-api-1.21.11-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:639) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:596) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at net.minecraft.server.MinecraftServer.initPostWorld(MinecraftServer.java:636) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:365) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1253) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:388) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoClassDefFoundError: net/kyori/adventure/text/serializer/gson/legacyimpl/NBTLegacyHoverEventSerializer [in thread "Server thread"]
        at ItemsAdder_4.0.17.jar//itemsadder.m.axy.<clinit>(SourceFile:69) ~[?:?]
        at ItemsAdder_4.0.17.jar//itemsadder.m.ayr.<clinit>(SourceFile:17) ~[?:?]
        at ItemsAdder_4.0.17.jar//dev.lone.itemsadder.Main.onLoad(SourceFile:173) ~[?:?]
        at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:59) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:18) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:39) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:39) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:555) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:320) ~[paper-1.21.11.jar:1.21.11-132-c5eb079]
        ... 3 more