[10:29:05 WARN]: [WildStacker] Task #9850 for WildStacker v3.4.3 generated an exception
java.lang.NoClassDefFoundError: com/gmail/nossr50/util/compat/layers/persistentdata/MobMetaFlagType
        at com.bgsoftware.wildstacker.l.R.K(ko:13) ~[?:?]
        at com.bgsoftware.wildstacker.listeners.B.K(re:243) ~[?:?]
        at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftTask.run(CraftTask.java:99) ~[patched_1.16.5.jar:git-Paper-457]
        at org.bukkit.craftbukkit.v1_16_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:468) ~[patched_1.16.5.jar:git-Paper-457]
        at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1294) ~[patched_1.16.5.jar:git-Paper-457]
        at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:377) ~[patched_1.16.5.jar:git-Paper-457]
        at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1209) ~[patched_1.16.5.jar:git-Paper-457]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:997) ~[patched_1.16.5.jar:git-Paper-457]
        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:174) ~[patched_1.16.5.jar:git-Paper-457]
        at java.lang.Thread.run(Unknown Source) [?:?]
Caused by: java.lang.ClassNotFoundException: com.gmail.nossr50.util.compat.layers.persistentdata.MobMetaFlagType
        at java.net.URLClassLoader.findClass(Unknown Source) ~[?:?]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:182) ~[patched_1.16.5.jar:git-Paper-457]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:111) ~[patched_1.16.5.jar:git-Paper-457]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?]
        ... 10 more