I am getting the following error, any thoughts?

Message: Interface\FrameXML\MainMenuBar.lua:125: Usage: local cost = C_ArtifactUI.GetCostForPointAtRank(rank, tier)
Time: Wed Apr 5 07:32:00 2017
Count: 1
Stack: [C]: ?
[C]: in function `GetCostForPointAtRank'
Interface\FrameXML\MainMenuBar.lua:125: in function `MainMenuBar_GetNumArtifactTraitsPurchasableFromXP '
...erface\AddOns\Jamba-DisplayTeam\JambaDisplayTeam.lua:2571: in function `?'
...AddOns\ElvUI\Libraries\AceTimer-3.0\AceTimer-3.0.lua:53: in function <...AddOns\ElvUI\Libraries\AceTimer-3.0\AceTimer-3.0.lua:48>