WoW Version
Retail

AddOn skin name
Not Sure

Describe the bug
Not sure what was the things I was playing with, but I got this while leveling in early access yesterday

1x Skinner/Core/UIFrames.lua:239: attempt to index local 'frame' (a nil value)
[string "@Skinner/Core/UIFrames.lua"]:239: in function <Skinner/Core/UIFrames.lua:139>
[string "@Skinner/Core/UIFrames.lua"]:257: in function <Skinner/Core/UIFrames.lua:256>
[string "=(tail call)"]: ?
[string "=[C]"]: in function setUpFunction' [string "@Blizzard_FrameXML/Mainline/AlertFrames.lua"]:180: in function ShowAlert'
[string "@Blizzard_FrameXML/Mainline/AlertFrames.lua"]:116: in function AddAlert' [string "@Blizzard_FrameXML/Mainline/AlertFrames.lua"]:570: in function <...ceBlizzard_FrameXML/Mainline/AlertFrames.lua:569> [string "=[C]"]: in function xpcall'
[string "@Blizzard_ObjectAPI/Mainline/ContinuableContainer.lua"]:83: in function <...Blizzard_ObjectAPI/Mainline/ContinuableContainer.lua:75>
[string "=(tail call)"]: ?
[string "@Blizzard_FrameXML/Mainline/AlertFrames.lua"]:569: in function <...ceBlizzard_FrameXML/Mainline/AlertFrames.lua:528>

Locals:
type = "DungeonCompletion"
frame = nil
(*temporary) =

{
blizzLoDFrames = {
}
blizzFrames = {
}
bColour = {
}
rarrow = "→"
larrow = "←"
mmButs = {
}
db = {
}
isTT = false
Backdrop = {
}
bdTexName = "Blizzard ChatFrame Background"
isClscERAPTR = false
iofDD = {
}
bdbTexName = "Blizzard Tooltip"
isRtl = true
nearrow = "↗"
ttDelay = 0.200000
ttHook = {
}
isClsc = false
name = "Skinner"
ebRgns = {
}
isClscERA = false
L = {
}
pbtt = {
}
BTr = 0.615686
modUIBtns = {
}
iofSkinnedPanels = {
}
DBIcon = {
}
defaultModuleState = true
bgTexName = "None"
BTb = 0
itTex = -15950
lodAddons = {
}
prdb = {
}
backdrop = {
}
nwarrow = "↖"
swarrow = "↙"
ItemPimper = true
ACD = {
}
ttList = {
}
tabFrames = {
}
isClscBeta = false
fontDS = fontDS {
}
BTg = 0.615686
HTg = 0.862745
gmaxClr = {
}
hooks = {
}
optionsFrames = {
}
isRtlPTR = true
isRtlPTRX = false
iofBtn = {
}
LSM = {
}
HTb = 0.011765
uName = "Rufusdog"
lmAddons = {
}
modBtns = true
isRtlBeta = false
isPatch = true
downarrow = "↓"
gradientCBar = {
}
gradFrames = {
}
bbClr = {
}
gearcog = "⛯"
libsToSkin = {
}
fontSBX = fontSBX {
}
fontP = fontP {
}
fontDP = fontDP {
}
addonsToSkin = {
}
callbacks = {
}
tFDIDs = {
}
fontS = fontS {
}
modules = {
}
ACR = {
}
oocTab = {
}
optTables = {
}
BT = {
}
enabledState = true
sbGlazed = {
}
searrow = "↘"
IT = {
}
initialized = {
}
bbColour = {
}
uCls = "DEATHKNIGHT"
DT = {
}
HTr = 1
tbClr = {
}
uparrow = "↑"
bClr = {
}
gminClr = {
}
defaultModuleLibraries = {
}
sbClr = {
}
sbTexture = "Interface\Buttons\WHITE8X8"
modBtnBs = true
HT = {
}
isClscPTR = false
orderedModules = {
}
gradientTex = 130937
gradientTab = {
}
otherAddons = {
}
optCheck = {
}
baseName = "Skinner"
ignoreQT = {
}
aboutPanels = {
}
skinTPLs = {
}
}
(*temporary) = {
fType = "u"
}
(*temporary) = "dungeonTexture"
(*temporary) = {
blizzLoDFrames = {
}
blizzFrames = {
}
bColour = {
}
rarrow = "→"
larrow = "←"
mmButs = {
}
db = {
}
isTT = false
Backdrop = {
}
bdTexName = "Blizzard ChatFrame Background"
isClscERAPTR = false
iofDD = {
}
bdbTexName = "Blizzard Tooltip"
isRtl = true
nearrow = "↗"
ttDelay = 0.200000
ttHook = {
}
isClsc = false
name = "Skinner"
ebRgns = {
}
isClscERA = false
L = {
}
pbtt = {
}
BTr = 0.615686
modUIBtns = {
}
iofSkinnedPanels = {
}
DBIcon = {
}
defaultModuleState = true
bgTexName = "None"
BTb = 0
itTex = -15950
lodAddons = {
}
prdb = {
}
backdrop = {
}
nwarrow = "↖"
swarrow = "↙"
ItemPimper = true
ACD = {
}
ttList = {
}
tabFrames = {
}
isClscBeta = false
fontDS = fontDS {
}
BTg = 0.615686
HTg = 0.862745
gmaxClr = {
}
hooks = {
}
optionsFrames = {
}
isRtlPTR = true
isRtlPTRX = false
iofBtn = {
}
LSM = {
}
HTb = 0.011765
uName = "Rufusdog"
lmAddons = {
}
modBtns = true
isRtlBeta = false
isPatch = true
downarrow = "↓"
gradientCBar = {
}
gradFrames = {
}
bbClr = {
}
gearcog = "⛯"
libsToSkin = {
}
fontSBX = fontSBX {
}
fontP = fontP {
}
fontDP = fontDP {
}
addonsToSkin = {
}
callbacks = {
}
tFDIDs = {
}
fontS = fontS {
}
modules = {
}
ACR = {
}
oocTab = {
}
optTables = {
}
BT = {
}
enabledState