WORLDGUARD-3156 - Reported by sk89q

java.lang.IllegalArgumentException: No input stream available
at com.sk89q.worldguard.util.profile.util.HttpRequest.returnContent(HttpRequest.java:224) ~[?:?]
at com.sk89q.worldguard.util.profile.resolver.HttpRepositoryService.query(HttpRepositoryService.java:168) ~[?:?]
at com.sk89q.worldguard.util.profile.resolver.HttpRepositoryService.findAllByName(HttpRepositoryService.java:131) ~[?:?]
at com.sk89q.worldguard.util.profile.resolver.CombinedProfileService.findAllByName(CombinedProfileService.java:129) ~[?:?]
at com.sk89q.worldguard.util.profile.resolver.CacheForwardingService.findAllByName(CacheForwardingService.java:80) ~[?:?]
at com.sk89q.worldguard.protection.managers.migration.UUIDMigration.migrate(UUIDMigration.java:113) ~[?:?]
at com.sk89q.worldguard.protection.managers.migration.UUIDMigration.migrate(UUIDMigration.java:84) ~[?:?]
at com.sk89q.worldguard.protection.managers.migration.AbstractMigration.migrate(AbstractMigration.java:57) ~[?:?]
at com.sk89q.worldguard.bukkit.RegionContainer.migrate(RegionContainer.java:280) ~[?:?]
at com.sk89q.worldguard.bukkit.RegionContainer.autoMigrate(RegionContainer.java:299) ~[?:?]
at com.sk89q.worldguard.bukkit.RegionContainer.initialize(RegionContainer.java:91) ~[?:?]
at com.sk89q.worldguard.bukkit.WorldGuardPlugin.onEnable(WorldGuardPlugin.java:217) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[spigot.jar:git-Spigot-1610]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [spigot.jar:git-Spigot-1610]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-1610]
at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476) [spigot.jar:git-Spigot-1610]
at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394) [spigot.jar:git-Spigot-1610]
at net.minecraft.server.v1_7_R4.MinecraftServer.n(MinecraftServer.java:360) [spigot.jar:git-Spigot-1610]
at net.minecraft.server.v1_7_R4.MinecraftServer.g(MinecraftServer.java:334) [spigot.jar:git-Spigot-1610]
at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:290) [spigot.jar:git-Spigot-1610]
at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:210) [spigot.jar:git-Spigot-1610]
at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [spigot.jar:git-Spigot-1610]
at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1610]

Reason:
Spigot UUID API cache is extremely incomplete: SpigotMC/Spigot@3452c62

Comment by sk89q

For anyone looking up the fix, it is to update Spigot.