java.lang.IllegalArgumentException: Name and ID cannot both be blank
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java.lang.IllegalArgumentException: Name and ID cannot both be blank
at com.mojang.authlib.GameProfile.
(GameProfile.java:25) at net.minecraft.server.v1_10_R1.UserCache.a(UserCache.java:90)
at net.minecraft.server.v1_10_R1.UserCache.getProfile(UserCache.java:158)
at net.minecraft.server.v1_10_R1.Village.b(Village.java:444)
at net.minecraft.server.v1_10_R1.PersistentVillage.b(PersistentVillage.java:256)
at net.minecraft.server.v1_10_R1.PersistentCollection.a(PersistentCollection.java:99)
at net.minecraft.server.v1_10_R1.PersistentCollection.a(PersistentCollection.java:84)
at net.minecraft.server.v1_10_R1.WorldServer.a(WorldServer.java:1083)
at net.minecraft.server.v1_10_R1.WorldServer.save(WorldServer.java:1024)
at org.bukkit.craftbukkit.v1_10_R1.CraftWorld.save(CraftWorld.java:823)
at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:755)
at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:629)
at java.lang.Thread.run(Thread.java:745)