Describe the bug

The 15th anniversary event instance isn't found.

Do you have an error log of what happened?

198x AdventureGuideLockouts\Core.lua:202: table index is nil
AdventureGuideLockouts\Core.lua:202: in function `UpdateSavedInstances'
AdventureGuideLockouts\Core.lua:385: in function <AdventureGuideLockouts\Core.lua:377>

Locals:
self =

{
worldBosses = {
}
UpdateStatusFramePosition = defined @AdventureGuideLockouts\Core.lua:285
UpdateSavedInstances = defined @AdventureGuideLockouts\Core.lua:131
isDarkshoreAvailable = false
isStromgardeAvailable = true
instances = {
}
GetSavedWorldBossEncounterInfo = defined @AdventureGuideLockouts\Core.lua:119
instancesLockouts = {
}
UpdateInstanceStatusFrame = defined @AdventureGuideLockouts\Core.lua:328
RequestWarfrontInfo = defined @AdventureGuideLockouts\Core.lua:50
CreateStatusFrame = defined @AdventureGuideLockouts\Core.lua:220
GetSavedWorldBossInfo = defined @AdventureGuideLockouts\Core.lua:89
eventFrame = {
}
UpdateFrames = defined @AdventureGuideLockouts\Core.lua:360
}
savedInstances = 3
savedWorldBosses = 5
instanceName = "Freehold"
instanceID = nil
instanceReset = 175039
instanceDifficulty = 23
locked = true
extended = false
instanceIDMostSig = 524419072
isRaid = false
maxPlayers = 5
difficultyName = "Mythic"
numEncounters = 0
numCompleted = 0
difficulty = 4
playerFaction = "Alliance"
(for index) = 1
(for limit) = 8
(for step) = 1
instanceIndex = 1
encounters = {
}
encounterIndex = 1
(*temporary) = {
}
(*temporary) = {
}
(*temporary) = true
(*temporary) = false
(*temporary) = false
(*temporary) = true
(*temporary) = nil
(*temporary) = false
(*temporary) = nil
(*temporary) = 1
(*temporary) = 1
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "table index is nil"
GetNumSavedInstances = defined =[C]:-1
UnitFactionGroup = defined =[C]:-1
GetSavedInstanceInfo = defined =[C]:-1
tonumber = defined =[C]:-1
GetSavedInstanceChatLink = defined =[C]:-1
GetDifficultyInfo = defined =[C]:-1
GetSavedInstanceEncounterInfo = defined =[C]:-1
tinsert = defined =[C]:-1
C_TaskQuest_GetQuestTimeLeftMinutes = defined =[C]:-1

To Reproduce

Screenshots

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

Which version of SavedInstances are you using?

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

Additional context