Lua Error 580

Message: ...terface\AddOns\ShadowedUnitFrames\modules\layout.lua:580: attempt to compare nil with number
Time: Fri Feb  7 02:05:15 2020
Count: 2
Stack: ...terface\AddOns\ShadowedUnitFrames\modules\layout.lua:580: attempt to compare nil with number
[string "@Interface\AddOns\ShadowedUnitFrames\modules\layout.lua"]:580: in function `PositionWidgets'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\layout.lua"]:143: in function `Load'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:303: in function `SetVisibility'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:605: in function <...nterface\AddOns\ShadowedUnitFrames\modules\units.lua:435>
[string "=[C]"]: in function `SetAttribute'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:956: in function `LoadUnit'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:1329: in function `InitializeFrame'
[string "@Interface\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua"]:263: in function `LoadUnits'
[string "@Interface\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua"]:86: in function `OnInitialize'
[string "@Interface\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua"]:907: in function <...ace\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua:905>

Locals: self = <table> {
 SetupBars = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:363
 CheckMedia = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:48
 SetupFrame = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:319
 LoadSML = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:166
 ReverseDirection = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:222
 ToggleVisibility = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:68
 GetRelative = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:210
 PositionWidgets = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:496
 mediaPath = <table> {
 }
 SetupText = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:450
 InitFontString = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:418
 MediaRegistered = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:58
 GetRelativeAnchor = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:227
 SetupFontString = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:402
 GetAuraGrowth = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:218
 Reload = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:99
 SetBarVisibility = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:76
 GetJustify = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:193
 GetPoint = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:206
 MediaForced = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:10
 GetColumnGrowth = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:214
 GetSplitRelativeAnchor = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:249
 Load = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:124
 AnchorFrame = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:265
}
frame = SUFUnitfocustarget {
 0 = <userdata>
 OnEnter = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:662
 UnregisterAll = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:140
 registeredEvents = <table> {
 }
 UnitClassToken = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:677
 powerBar = <unnamed> {
 }
 RegisterNormalEvent = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:62