Error

pex backend p2compat
15:47:18 [INFO] [PermissionsEx] Initializing p2compat backend
15:47:18 [INFO] [PermissionsCompat] Parsing "25Main.yml" file
15:47:18 [INFO] Error during backend initialization.
15:47:18 [SEVERE] expected '<document start>', but found BlockMappingStart
 in "<reader>", line 278, column 1:
    users:
    ^

15:47:18 [SEVERE] 	at org.yaml.snakeyaml.parser.ParserImpl$ParseDocumentStart.produce(ParserImpl.java:233)
15:47:18 [SEVERE] 	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:163)
15:47:18 [SEVERE] 	at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:148)
15:47:18 [SEVERE] 	at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:108)
15:47:18 [SEVERE] 	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:124)
15:47:18 [SEVERE] 	at org.yaml.snakeyaml.Yaml.load(Yaml.java:264)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.config.Configuration.load(Configuration.java:65)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.compat.P2Backend.loadPermissions(P2Backend.java:124)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.compat.P2Backend.initialize(P2Backend.java:53)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.PermissionManager.setBackend(PermissionManager.java:418)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.bukkit.commands.UtilityCommands.setBackend(UtilityCommands.java:104)
15:47:18 [SEVERE] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
15:47:18 [SEVERE] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
15:47:18 [SEVERE] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
15:47:18 [SEVERE] 	at java.lang.reflect.Method.invoke(Method.java:597)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.commands.CommandsManager$CommandBinding.call(CommandsManager.java:298)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.commands.CommandsManager.execute(CommandsManager.java:120)
15:47:18 [SEVERE] 	at ru.tehkode.permissions.bukkit.PermissionsEx.onCommand(PermissionsEx.java:123)
15:47:18 [SEVERE] 	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:35)
15:47:18 [SEVERE] 	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:129)
15:47:18 [SEVERE] 	at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:344)
15:47:18 [SEVERE] 	at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:489)
15:47:18 [SEVERE] 	at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:468)
15:47:18 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:363)
15:47:18 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)