clicking damage type colors returns this error

7x ClassicFCT/config.lua:813: attempt to call method 'SetColorRGB' (a nil value)
[string "@ClassicFCT/config.lua"]:813: in function <ClassicFCT/config.lua:792>

Locals:
self = ClassicFCT_SpecialAttacks_ScrollChild_Frame4_Frame5 {
label = FontString {
}
value =

{
}
preview = Texture {
}
configPath = "Config.spellcrit.fontColor"
}
a = 1
r = 1
g = 0.909804
b = 0
(*temporary) = nil
(*temporary) = ColorPickerFrame {
DragBar = Frame {
}
opacity = 0
hasOpacity = true
Header = Frame {
}
Footer = Frame {
}
Border = Frame {
}
Content = Frame {
}
}
(*temporary) = 1
(*temporary) = 0.909804
(*temporary) = 0
(*temporary) = "attempt to call method 'SetColorRGB' (a nil value)"
CFCT = {
characterSpecificConfig = false
selectedPreset = "mopremixDK"
lastVersion = "M0.87k"
enabled = true
hideBlizzHeals = false
_DefaultPresets = {
}
forceCVars = true
hideBlizz = true
Animating = {
}
eventCache = {
}
fontStringCache = {
}
ConfigPanels = {
}
Presets = {
}
_testMode = true
ConfigPanel = ClassicFCT_ClassicFCT_ScrollChild {
}
Config = {
}
spellIdCache = {
}
frame = ClassicFCT.frame {
}
_log = {
}
}
ConfigPathOrFunc = "Config.spellcrit.fontColor"