Describe the bug

Do you have an error log of what happened?
30x DBM-Core/DBM-Core.lua:7402: attempt to index field '?' (a nil value)
[string "@DBM-Core/DBM-Core.lua"]:7402: in function GetRoleFlagValue' [string "@DBM-Core/DBM-Core.lua"]:7966: in function AddBoolOption'
[string "@DBM-Core/modules/objects/Announce.lua"]:636: in function <DBM-Core/modules/objects/Announce.lua:582>
[string "=(tail call)"]: ?
[string "@DBM-Party-Cataclysm/BlackrockCaverns/RomoggBonecrusher.lua"]:18: in main chunk
[string "=[C]"]: ?
[string "=[C]"]: in function LoadAddOn' [string "@DBM-Core/DBM-Core.lua"]:3998: in function LoadMod'
[string "@DBM-Core/DBM-Core.lua"]:3941: in function LoadModsOnDemand' [string "@DBM-Core/DBM-Core.lua"]:3841: in function func'
[string "@DBM-Core/modules/Scheduler.lua"]:175: in function <DBM-Core/modules/Scheduler.lua:166>

Locals:
self =

{
NoSortAnnounce = false
timers = {
}
categorySort = {
}
instanceId = 66
inCombatOnlyEvents = {
}
modelId = 33147
SyncThreshold = 8
numBoss = 1
combatInfo = {
}
encounterId = 1040
creatureId = 39665
modId = "DBM-Party-Cataclysm"
groupSpells = {
}
statTypes = "normal,heroic,timewalker"
isTrashMod = false
specwarns = {
}
zones = {
}
revision = 20210922153837
Options = {
}
DefaultOptions = {
}
id = "105"
inCombat = false
addon = {
}
iconRestore = {
}
isDummyMod = false
groupOptions = {
}
optionCategories = {
}
yells = {
}
localization = {
}
announces = {
}
vb = {
}
subTab = 1
}
flag = "Tank|Healer"
flags = {
1 = "Tank"
2 = "Healer"
}
(for index) = 1
(for limit) = 2
(for step) = 1
i = 1
flagText = "Tank"
(*temporary) = nil
(*temporary) = 399
(*temporary) = "^-"
(*temporary) = nil
(*temporary) = "attempt to index field '?' (a nil value)"
currentSpecID = 399
DBM = {
MoveSpecialWarning = defined @DBM-Core/modules/objects/SpecialWarning.lua:132
CopyAllModOption = defined @DBM-Core/DBM-Core.lua:3262
PLAY_MOVIE = defined @DBM-Core/DBM-Core.lua:7288
SortByTankAlpha = defined @DBM-Core/DBM-Core.lua:7554
CopyProfile = defined @DBM-Core/DBM-Core.lua:2010
GetNumRealGroupMembers = defined @DBM-Core/DBM-Core.lua:2833
CHAT_MSG_WHISPER = defined @DBM-Core/DBM-Core.lua:6958
GetCachedBossHealth = defined @DBM-Core/DBM-Core.lua:7943
DungeonMusic = {
}
FireEvent = defined @DBM-Core/DBM-Core.lua:1918
CreateModLocalization = defined @DBM-Core/modules/objects/Localization.lua:104
GetMyPlayerInfo = defined @DBM-Core/DBM-Core.lua:2739
ADDON_LOADED = defined @DBM-Core/DBM-Core.lua:1524
CANCEL_PLAYER_COUNTDOWN = defined @DBM-Core/DBM-Core.lua:4982
INSTANCE_GROUP_SIZE_CHANGED = defined @DBM-Core/DBM-Core.lua:2539
AddDefeatSound = defined @DBM-Core/modules/Sounds.lua:123
GetDefeatSounds = defined @DBM-Core/modules/Sounds.lua:116
GroupInCombat = defined @DBM-Core/DBM-Core.lua:8664
UPDATE_MOUSEOVER_UNIT = defined @DBM-Core/DBM-Core.lua:4070
GetSpellCooldown = defined @DBM-Core/DBM-Core.lua:6508
UPDATE_BATTLEFIELD_STATUS = defined @DBM-Core/DBM-Core.lua:3632
UnitAura = defined @DBM-Core/DBM-Core.lua:6535
IsRanged = defined @DBM-Core/DBM-Core.lua:7496
LFG_PROPOSAL_SHOW = defined @DBM-Core/DBM-Core.lua:3541
ReleaseRevision = 20240527000000
RegisterShortTermEvents = defined @DBM-Core/DBM-Core.lua:1288
LOADING_SCREEN_DISABLED = defined @DBM-Core/DBM-Core.lua:3853
GetUnitFullName = defined @DBM-Core/DBM-Core.lua:2744
IsClassic = defined @DBM-Core/DBM-Core.lua:7337
UNIT_HEALTH_FREQUENT = defined @DBM-Core/DBM-Core.lua:5794
UNIT_DIED = defined @DBM-Core/DBM-Core.lua:6652
IsTanking = defined @DBM-Core/DBM-Core.lua:7723
FindInstanceIDs = defined @DBM-Core/modules/DevTools.lua:91
CHALLENGE_MODE_RESET = defined @DBM-Core/DBM-Core.lua:3901
UnitDebuff = defined @DBM-Core/DBM-Core.lua:6576
LFG_ROLE_CHECK_SHOW = defined @DBM-Core/DBM-Core.lua:3532
Disable = defined

To Reproduce

Screenshots

Did you try having DeadlyBossMods as the only enabled addon and everything else (especially something like ElvUI) disabled?

Which version of DeadlyBossMods are you using? DBM Core_10.2.43

Was it working in a previous version? If yes, which was the last good one?

Additional context