Plugins RealisticVillagers 3.3.5

[21:19:17 ERROR]: Error occurred while enabling RealisticVillagers v3.1.1 (Is it up to date?)
java.lang.NoClassDefFoundError: com/comphenix/protocol/utility/MinecraftVersion
at me.matsubara.realisticvillagers.util.PluginUtils.<clinit>(PluginUtils.java:83) ~[test.jar:?]
at me.matsubara.realisticvillagers.RealisticVillagers.updateConfig(RealisticVillagers.java:391) ~[test.jar:?]
at me.matsubara.realisticvillagers.RealisticVillagers.updateConfigs(RealisticVillagers.java:269) ~[test.jar:?]
at me.matsubara.realisticvillagers.RealisticVillagers.onEnable(RealisticVillagers.java:184) ~[test.jar:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:281) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:190) ~[paper-1.20.4.jar:git-Paper-405]
at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:104) ~[paper-1.20.4.jar:git-Paper-405]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:507) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_20_R3.CraftServer.enablePlugin(CraftServer.java:637) ~[paper-1.20.4.jar:git-Paper-405]
at org.bukkit.craftbukkit.v1_20_R3.CraftServer.enablePlugins(CraftServer.java:548) ~[paper-1.20.4.jar:git-Paper-405]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:274) ~[paper-1.20.4.jar:git-Paper-405]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1131) ~[paper-1.20.4.jar:git-Paper-405]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319) ~[paper-1.20.4.jar:git-Paper-405]
at java.lang.Thread.run(Thread.java:840) ~[?:?]
Caused by: java.lang.ClassNotFoundException: com.comphenix.protocol.utility.MinecraftVersion
at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:197) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:164) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?]
... 14 more