Problem/Bug GroupManager ERROR.LOG

When i try to do /manuadd [name] [group] it doesnt work and says to got to plugins/groupmanager/ERROR.LOG so i went there and this is what pops up. Can someone please help me.
2015-01-22 17-35
=============================== GM ERROR LOG ===============================
= ERROR REPORT START - 2.1.31 (Phoenix) =

java.lang.IllegalArgumentException: The following file couldn't pass on Parser.
plugins/GroupManager/worlds/accent/groups.yml
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadGroups(WorldDataHolder.java:590)
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadGroups(WorldDataHolder.java:510)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.loadWorld(WorldsHolder.java:678)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.loadWorld(WorldsHolder.java:640)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.initialWorldLoading(WorldsHolder.java:110)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.initialLoad(WorldsHolder.java:100)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.resetWorldsHolder(WorldsHolder.java:92)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.<init>(WorldsHolder.java:59)
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:179)
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:103)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404)
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugin(CraftServer.java:446)
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.enablePlugins(CraftServer.java:380)
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.reload(CraftServer.java:799)
at org.bukkit.Bukkit.reload(Bukkit.java:288)
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180)
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServer.java:701)
at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerConnection.java:956)
at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:817)
at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java:28)
at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat.java:47)
at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:157)
at net.minecraft.server.v1_7_R3.ServerConnection.c(SourceFile:134)
at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:667)
at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:260)
at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:558)
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:469)
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628)
Caused by: while scanning an anchor
in "<reader>", line 21, column 15:
prefix: &8[&5D&8]
^
expected alphabetic or numeric character, but found [(91)
in "<reader>", line 21, column 17:
prefix: &8[&5D&8]
^

at org.yaml.snakeyaml.scanner.ScannerImpl.scanAnchor(ScannerImpl.java:1169)
at org.yaml.snakeyaml.scanner.ScannerImpl.fetchAnchor(ScannerImpl.java:782)
at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:315)
at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:179)
at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingValue.produce(ParserImpl.java:591)
at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:161)
at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:146)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:133)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
at org.yaml.snakeyaml.composer.Composer.composeDocument(Composer.java:123)
at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:106)
at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:121)
at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:480)
at org.yaml.snakeyaml.Yaml.load(Yaml.java:423)
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadGroups(WorldDataHolder.java:585)
... 30 more

 

The file plugins/GroupManager/worlds/accent/groups.yml has errors. Did you edit it manually? It looks like line 21 is missing single quotes.

EDIT: "JrAntVenom", ha ha.

 

Yes i did edit it manually