Bad argument OutputchatBox

[LucasBaker]

Bad argument in line 15 to add the player in acl GV M does not appear the message to him

function giveGroove (playerSource, commandName, accountName)  
    if accountName then  
        aclGroupAddObject (aclGetGroup("GV M"), "user."..accountName)  
        outputChatBox ("[sERVER] Player '"..accountName.."' adicionado com sucesso na Gangue Groove Street", playerSource) 
        outputChatBox ("[sERVER] Você foi adicionado a Gangue Groove Street.", accountName) 
    else  
        outputChatBox ("[sERVER] Conta não especificada.", playerSource) 
        outputChatBox ("Correct syntax: /convidargv [accountName]", playerSource) 
    end 
end 
  
addCommandHandler ("convidargv", giveGroove) 

could someone help me?

[Anubhav]

  
function giveGroove (playerSource, commandName, accountName) 
    if accountName and getAccount(accountName) then 
        aclGroupAddObject (aclGetGroup("GV M"), "user."..accountName) 
        outputChatBox ("[sERVER] Player '"..accountName.."' adicionado com sucesso na Gangue Groove Street", playerSource) 
        outputChatBox ("[sERVER] Você foi adicionado a Gangue Groove Street.", getAccountPlayer(getAccount(accountName))) 
    else 
        outputChatBox ("[sERVER] Conta não especificada.", playerSource) 
        outputChatBox ("Correct syntax: /convidargv [accountName]", playerSource) 
    end 
end 
  
addCommandHandler ("convidargv", giveGroove)