[21:08:59 ERROR]: Error occurred while enabling ItemsAdder v3.6.6-legacy (Is it up to date?)
java.lang.NoClassDefFoundError: me/wolfyscript/customcrafting/listeners/AnvilListener
        at dev.lone.itemsadder.Core.OtherPlugins.CustomCrafting.CustomCraftingAPIWrapper.<clinit>(SourceFile:29) ~[ItemsAdder_3.6.6-legacy.jar:?]
        at dev.lone.itemsadder.Main.onEnable(SourceFile:334) ~[ItemsAdder_3.6.6-legacy.jar:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:281) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:189) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:104) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:507) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_20_R1.CraftServer.enablePlugin(CraftServer.java:656) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at org.bukkit.craftbukkit.v1_20_R1.CraftServer.enablePlugins(CraftServer.java:567) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:640) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:439) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:345) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1116) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:322) ~[purpur-1.20.1.jar:git-Purpur-2062]
        at java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ClassNotFoundException: me.wolfyscript.customcrafting.listeners.AnvilListener
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:185) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:152) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[?:?]
        ... 14 more