6x ...onTools\libs\LibUIDropDownMenu\LibUIDropDownMenu.lua:377: attempt to call method 'SetBackdrop' (a nil value)
[string "@MythicDungeonTools\libs\LibUIDropDownMenu\LibUIDropDownMenu.lua"]:377: in function <...onTools\libs\LibUIDropDownMenu\LibUIDropDownMenu.lua:367>
[string "@MythicDungeonTools\libs\LibUIDropDownMenu\LibUIDropDownMenu.lua"]:574: in function `create_DropDownButtons'
[string "@MythicDungeonTools\libs\LibUIDropDownMenu\LibUIDropDownMenu.lua"]:603: in main chunk

Locals:
name = "L_DropDownList1"
parent = nil
f = L_DropDownList1 {
0 =
}
fbd = L_DropDownList1Backdrop {
0 =
}
(*temporary) = nil
(*temporary) = L_DropDownList1Backdrop {
0 =
}
(*temporary) =

{
bgFile = "DialogFrame\UI-DialogBox-Background-Dark"
tileSize = 32
edgeFile = "DialogFrame\UI-DialogBox-Border"
tile = true
edgeSize = 32
insets = {
}
}
(*temporary) = "attempt to call method 'SetBackdrop' (a nil value)"
_G = {
ContainerFrame5Item7 = ContainerFrame5Item7 {
}
ARKINV_Frame1ScrollContainerBag5Item23ArkIconOverlay = ARKINV_Frame1ScrollContainerBag5Item23ArkIconOverlay {
}
GetTrainerServiceTypeFilter = defined =[C]:-1
UNIT_NAMES_COMBATLOG_TOOLTIP = "Color unit names."
SetTrainerServiceTypeFilter = defined =[C]:-1
LE_GAME_ERR_CHAT_RAID_RESTRICTED_TRIAL = 746
SPELL_FAILED_CUSTOM_ERROR_71 = "This partygoer wants to dance with you."
LE_GAME_ERR_PET_SPELL_TARGETS_DEAD = 402
CompactUnitFrameProfilesGeneralOptionsFrameHealthTextDropdownButtonNormalTexture = CompactUnitFrameProfilesGeneralOptionsFrameHealthTextDropdownButtonNormalTexture {
}
MultiBarLeftButton7 = MultiBarLeftButton7 {
}
InterfaceOptionsNamesPanelUnitNameplatesShowAll = InterfaceOptionsNamesPanelUnitNameplatesShowAll {
}
LFGListInviteDialog_OnEvent = defined @FrameXML\LFGList.lua:2495
MerchantItem3AltCurrencyFrameItem1Text = MerchantItem3AltCurrencyFrameItem1Text {
}
BINDING_NAME_NAMEPLATES = "Show Enemy Name Plates"
CHAT_HEADER_SUFFIX = ": "
MultiBarBottomRightButton8Shine5 = MultiBarBottomRightButton8Shine5 {
}
COVENANT_MISSIONS_HEALTH = "Health"
UnitFrameManaBar_UnregisterDefaultEvents = defined @FrameXML\UnitFrame.lua:789
PaperDollTitlesPaneButton13BgTop = PaperDollTitlesPaneButton13BgTop {
}
ERR_NOAMMO_S = "%s"
IAT_Achievement_2_140 = IAT_Achievement_2_140 {
}
MoneyFrame_OnEvent = defined @FrameXML\MoneyFrame.lua:202
AceConfigDialogTooltipTexture20 = AceConfigDialogTooltipTexture20 {
}
CinematicFrameRaidBossEmoteFrame = CinematicFrameRaidBossEmoteFrame {
}
CompactRaidFrameManagerDisplayFrameHiddenModeToggleTopRight = CompactRaidFrameManagerDisplayFrameHiddenModeToggleTopRight {
}
LFGTeleport = defined =[C]:-1
LE_GAME_ERR_ONLY_ONE_QUIVER = 33
SpellButton6Cooldown = SpellButton6Cooldown {
}
ToggleEncounterJournal = defined @FrameXML\UIParent.lua:1057
LOSS_OF_CONTROL_DISPLAY_FEAR = "Feared"
Graphics_QualityText = Graphics_QualityText {
}
OverrideActionBarButton6Shine11 = OverrideActionBarButton6Shine11 {
}
FriendsFriendsScrollFrameButton14 = FriendsFriendsScrollFrameButton14 {
}
CompactUnitFrameProfilesSaveButton = CompactUnitFrameProfilesSaveButton {
}
RaidGraphics_EnvironmentalDetailSlider = RaidGraphics_EnvironmentalDetailSlider {
}
ARKINV_Frame4TitleActionButton2 = ARKINV_Frame4TitleActionButton2 {
}
Is64BitClient = defined =[C]:-1
CompactRaidFrameManagerDisplayFrameFilterOptionsFilterRoleTankMiddleMiddle = CompactRaidFrameManagerDisplayFrameFilterOptionsFilterRoleTankMiddleMiddle {
}
TutorialFrame_OnMouseDown = defined @FrameXML\TutorialFrame.lua:376
ContainerFrame4Item16Cooldown = ContainerFrame4Item16Cooldown {
}
LE_GAME_ERR_AZERITE_ESSENCE_SELECTION_FAILED_ESSENCE_NOT_UNLOCKED = 1021
DUNGEON_FLOOR_DRAGONBLIGHTCHROMIESCENARIO2 = "Andorhal"
PlayerFrame_UpdateReadyCheck = defined @FrameXML\PlayerFrame.lua:460
L = {
}
WowTokenRedemptionFrameBg = WowTokenRedemptionFrameBg {
}
LFGListEntryCreation_GetAutoCreateData = defined @FrameXML\LFGList.lua:969
LAG_TOLERANCE = "Lag Tolerance"
SendStationeryBackgroundRight = SendStationeryBackgroundRight {
}
HekiliDB = {
}
PetStableStabledPet7 = PetStableStabledPet7 {
}
_ = "Horde"
CONQUEST_BAR = "Conquest %d / %d"
MultiBarLeftButton9Border = MultiBarLeftButton9Border {
}
LE_GAME_ERR_NOT_ON_TOURNAMENT_REALM = 838
OPTION_TOOLTIP_SHOW_ACCOUNT_ACHIEVEMENTS = "