Describe the bug
Whenever I log in or use a teleport / portal / hearthstone or somesuch I get the following error msg:

Do you have an error log of what happened?

22x SavedInstances\Modules\Progress.lua:431: attempt to index local 'prev' (a nil value)
[string "@SavedInstances\Modules\Progress.lua"]:431: in function 'OnWeeklyReset'
[string "@SavedInstances\Core\Core.lua"]:1408: in function 'UpdateToonData'
[string "@SavedInstances\Core\Core.lua"]:2570: in function <SavedInstances\Core\Core.lua:2566>
[string "=[C]"]: ?
[string "@datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:29: in function <...ore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25>
[string "@datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:64: in function 'Fire'
[string "@datastore\libs\AceEvent-3.0\AceEvent-3.0-4.lua"]:120: in function <DataStore\libs\AceEvent-3.0\AceEvent-3.0.lua:119>

1x SavedInstances\Modules\Progress.lua:431: attempt to index local 'prev' (a nil value)
[string "@SavedInstances\Modules\Progress.lua"]:431: in function 'OnWeeklyReset'
[string "@SavedInstances\Core\Core.lua"]:1408: in function 'UpdateToonData'
[string "@SavedInstances\Core\Core.lua"]:3450: in function 'ShowTooltip'
[string "@SavedInstances\Core\Core.lua"]:2531: in function <SavedInstances\Core\Core.lua:2529>
[string "@titan\LDBToTitan.lua"]:327: in function <Titan\LDBToTitan.lua:286>

Locals:
self =

{
SetDefaultModuleLibraries = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:367
Enable = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:294
UnregisterAllEvents = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:174
EnableModule = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:332
modules = {
}
GetModule = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:210
IterateEmbeds = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:442
ShowTooltip = defined @SavedInstances\Modules\Progress.lua:478
defaultModuleLibraries = {
}
UpdateAll = defined @SavedInstances\Modules\Progress.lua:368
BuildOptions = defined @SavedInstances\Modules\Progress.lua:442
GetName = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:279
name = "SavedInstances_Progress"
TrackedQuest = {
}
IsEnabled = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:451
orderedModules = {
}
DisableModule = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:350
RegisterMessage = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:90
UnregisterMessage = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:153
IsModule = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:217
OnWeeklyReset = defined @SavedInstances\Modules\Progress.lua:421
SetDefaultModuleState = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:387
questMap = {
}
SetEnabledState = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:424
OnDailyReset = defined @SavedInstances\Modules\Progress.lua:400
enabledState = true
baseName = "SavedInstances"
RegisterEvent = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:90
UnregisterAllMessages = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:174
Disable = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:314
OnEnable = defined @SavedInstances\Modules\Progress.lua:361
SetDefaultModulePrototype = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:409
IterateModules = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:437
NewModule = defined @datastore\libs\AceAddon-3.0\AceAddon-3.0.lua:235
defaultModuleState = true
SendMessage = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:59
moduleName = "Progress"
UnregisterEvent = defined @datastore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:153
QuestEnabled = defined @SavedInstances\Modules\Progress.lua:454
}
toon = "Anastasìia - Antonidas"
t = {
Paragon = {
}
IL = 177.437500
LastSeen = 1593548630
Emissary = {
}
Class = "MAGE"
WeeklyResetTime = 1619593199
Progress = {
}
DailyResetTime = 1619679599
Race = "Human"
oRace = "Human"
Warmode = false
LClass = "Mage"
Level = 110
XP = 10452
RBGrating = 0
MythicKeyBest = {
}
RestXP = 806332
MythicKey = {
}
Zone = "Nagrand"
Money = 4596409748
Order = 50
currency = {
}
PlayedTotal = 353254
Show = "saved"
MaxXP = 537730
PlayedLevel = 188524
Faction = "Alliance"
ILe = 151.750000
Skills = {
}
Quests = {
}
isResting = false
}
(for generator) = defined =[C]:-1
(for state) = {
1 = {
}
2 = <ta

---

To Reproduce

1. Log In
2. Error shows up
3. Use hearthsone
4. Error shows up
5. Hover over the SavedInstances options in Titan Panel
6. Error shows up
7. etc.

Did you try having SavedInstances as the only enabled addon and everything else (especially something like ElvUI) disabled?
No

Which version of SavedInstances are you using?
SavedInstances-9.0.7-10-g2446c91.zip

Was it working in a previous version? If yes, which was the last good one?
Yes. First time I got this error. Monday was still fine.