PTR error

Am curious on the ptr I am getting:

1x GS-Core\Core.lua:546: attempt to concatenate local ‘specclass’ (a nil value)
GS-Core\Core.lua:546: in function <GS-Core\Core.lua:535>
GS-Core\Core.lua:642: in function ?
FrameXML\ChatFrame.lua:4385: in function ChatEdit_ParseText
FrameXML\ChatFrame.lua:4053: in function ChatEdit_SendText
FrameXML\ChatFrame.lua:4089: in function <FrameXML\ChatFrame.lua:4085>
[C]: in function ChatEdit_OnEnterPressed
[string “:OnEnterPressed"]:1: in function <[string ":OnEnterPressed”]:1>

Any chance you might know what it’s doing?