Help NPE

[aikar]

smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] Exception in command: group tp 9921 6 -458
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] java.lang.NullPointerException
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.HelpEntry.getCommand(HelpEntry.java:42)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.CommandHelp.isExactMatch(CommandHelp.java:122)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.CommandContexts.lambda$new$19(CommandContexts.java:243)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.RegisteredCommand.resolveContexts(RegisteredCommand.java:259)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.RegisteredCommand.resolveContexts(RegisteredCommand.java:195)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.RegisteredCommand.invoke(RegisteredCommand.java:144)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.BaseCommand.executeCommand(BaseCommand.java:651)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.BaseCommand.findAndExecuteCommand(BaseCommand.java:854)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.BaseCommand.execute(BaseCommand.java:502)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.ForwardingCommand.execute(ForwardingCommand.java:52)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.RootCommand.execute(RootCommand.java:67)
smp4:[11:06:03] [Server thread/ERROR]: [Empire] [ACF] 	at co.aikar.commands.BukkitRootCommand.execute(BukkitRootCommand.java:62)