GroupManager YAML Error?

I got a new error
= ERROR REPORT START - 2.0 (Phoenix) =

java.lang.NullPointerException
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:169)
at org.anjocaido.groupmanager.GroupManager.onCommand(GroupManager.java:1815)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641)
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchServerCommand(CraftServer.java:627)
at net.minecraft.server.v1_8_R3.DedicatedServer.aO(DedicatedServer.java:412)
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:375)
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654)
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557)
at java.lang.Thread.run(Unknown Source)

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http://pastebin.com/bkC4Gnvx

 

Please paste your groups.yml on http://pastebin.com/ and link the URL here.

 

To add on top of what @oceantheskatr said, before posting a thread about your YAML, visit yamllint.com to check your file if it is valid or not, and the parser will give you additional info on what is wrong, and how to correct your file.
@connortrash201
Also, one of the errors you get in console tells you where you screwed up on your YAML. Use this parser to your advantage, and as it already said, the error is on line 140, column 5, and so on.

 

http://pastebin.com/bkC4Gnvx

 

Stop your server.
Start your server.
When it's fully started, stop it again.
Go in to your server files.
Go to the logs folder.
Open the file called latest.log.
Copy and paste the contents at http://pastebin.com/.
Post it there and then link the URL here.

 

http://pastebin.com/A0Qq4uDM

 

All (or most) of your groups are set to be the default group.

Open your groups.yml in Worldpad or Notepad++ and open the replace tool.

Replace this:

default: true

with this:

default: false

Replace all with that ^

After that, go to the "A" group and make sure default is set to true for that.