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I have no clue where to place bukkit errors, so I will place it here.
I have a error, and I would like some help with it, so please, I would like to thank in advance for whomever helps me.

=============================== GM ERROR LOG ===============================
= ERROR REPORT START - 2.0 (2.10.1) (Phoenix) =
java.lang.IllegalArgumentException: The following file couldn't pass on Parser.
plugins\GroupManager\worlds\world2\users.yml
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadUsers(WorldDataHolder.java:758)
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadUsers(WorldDataHolder.java:433)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.loadWorld(WorldsHolder.java:643)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.loadWorld(WorldsHolder.java:599)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.initialWorldLoading(WorldsHolder.java:88)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.initialLoad(WorldsHolder.java:78)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.resetWorldsHolder(WorldsHolder.java:70)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.<init>(WorldsHolder.java:59)
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:169)
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:93)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugin(CraftServer.java:282)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.enablePlugins(CraftServer.java:264)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.reload(CraftServer.java:605)
at org.bukkit.Bukkit.reload(Bukkit.java:275)
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:189)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchCommand(CraftServer.java:523)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchServerCommand(CraftServer.java:512)
at net.minecraft.server.v1_5_R3.DedicatedServer.an(DedicatedServer.java:262)
at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:227)
at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: unacceptable character ' ' (0x0) special characters are not allowed
in "<reader>", position 0
at org.yaml.snakeyaml.reader.StreamReader.checkPrintable(StreamReader.java:98)
at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:191)
at org.yaml.snakeyaml.reader.StreamReader.<init>(StreamReader.java:63)
at org.yaml.snakeyaml.Yaml.load(Yaml.java:423)
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadUsers(WorldDataHolder.java:753)
... 25 more
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