[15:11:14 INFO]: Done (3,726s)! For help, type "help" or "?"
[15:11:14 INFO]: Timings Reset
[15:11:14 WARN]: java.lang.IllegalArgumentException: unable to find valid entity superclass for class class net.citizensnpcs.nms.v1_11_R1.entity.ChickenController$EntityChickenNPC
[15:11:14 WARN]:        at net.citizensnpcs.nms.v1_11_R1.util.NMSImpl.registerEntityClass(NMSImpl.java:700)
[15:11:14 WARN]:        at net.citizensnpcs.util.NMS.registerEntityClass(NMS.java:176)
[15:11:14 WARN]:        at net.citizensnpcs.npc.AbstractEntityController.<init>(AbstractEntityController.java:16)
[15:11:14 WARN]:        at net.citizensnpcs.nms.v1_11_R1.entity.MobEntityController.<init>(MobEntityController.java:21)
[15:11:14 WARN]:        at net.citizensnpcs.nms.v1_11_R1.entity.ChickenController.<init>(ChickenController.java:26)
[15:11:14 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[15:11:14 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
[15:11:14 WARN]:        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[15:11:14 WARN]:        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
[15:11:14 WARN]:        at java.lang.Class.newInstance(Class.java:442)
[15:11:14 WARN]:        at net.citizensnpcs.npc.EntityControllers.createForType(EntityControllers.java:20)
[15:11:14 WARN]:        at net.citizensnpcs.npc.CitizensNPCRegistry.getByType(CitizensNPCRegistry.java:101)
[15:11:14 WARN]:        at net.citizensnpcs.npc.CitizensNPCRegistry.createNPC(CitizensNPCRegistry.java:49)
[15:11:14 WARN]:        at net.citizensnpcs.api.npc.SimpleNPCDataStore.loadInto(SimpleNPCDataStore.java:56)
[15:11:14 WARN]:        at net.citizensnpcs.Citizens$2.run(Citizens.java:304)
[15:11:14 WARN]:        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:58)
[15:11:14 WARN]:        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:355)
[15:11:14 WARN]:        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:807)
[15:11:14 WARN]:        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:403)
[15:11:14 WARN]:        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:749)
[15:11:14 WARN]:        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:648)
[15:11:14 WARN]:        at java.lang.Thread.run(Thread.java:745)
[15:11:14 WARN]: [Citizens] Task #19 for Citizens v2.0.21-SNAPSHOT (build 1436) generated an exception
java.lang.NullPointerException
        at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213) ~[patched_1.11.jar:git-Paper-933]
        at net.citizensnpcs.npc.CitizensNPC.<init>(CitizensNPC.java:55) ~[?:?]
        at net.citizensnpcs.npc.CitizensNPCRegistry.getByType(CitizensNPCRegistry.java:101) ~[?:?]
        at net.citizensnpcs.npc.CitizensNPCRegistry.createNPC(CitizensNPCRegistry.java:49) ~[?:?]
        at net.citizensnpcs.api.npc.SimpleNPCDataStore.loadInto(SimpleNPCDataStore.java:56) ~[?:?]
        at net.citizensnpcs.Citizens$2.run(Citizens.java:304) ~[?:?]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:58) ~[patched_1.11.jar:git-Paper-933]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:355) [patched_1.11.jar:git-Paper-933]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:807) [patched_1.11.jar:git-Paper-933]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:403) [patched_1.11.jar:git-Paper-933]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:749) [patched_1.11.jar:git-Paper-933]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:648) [patched_1.11.jar:git-Paper-933]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]