Bagnon was working fine prior to latest update.

Which software were you running?
10.2.10
Classic SoD

Have you read the changelog?
yes

Please describe the bug.
Error message on startup.

Please describe how to reproduce it.
see above

Error Logs are Important!
Message: .../AddOns/BagBrother/core/features/updateDetection.lua:66: bad argument #3 to 'format' (string expected, got nil)
Time: Fri Jan 5 13:29:19 2024
Count: 1
Stack: .../AddOns/BagBrother/core/features/updateDetection.lua:66: bad argument #3 to 'format' (string expected, got nil)
[string "=[C]"]: in function format' [string "@Interface/AddOns/BagBrother/core/features/updateDetection.lua"]:66: in function Popup'
[string "@Interface/AddOns/BagBrother/core/features/updateDetection.lua"]:35: in function ?' [string "@Interface/AddOns/BagBrother/libs/WildAddon-1.0/WildAddon-1.0.lua"]:20: in function <...dOns/BagBrother/libs/WildAddon-1.0/WildAddon-1.0.lua:18> [string "@Interface/AddOns/BagBrother/libs/WildAddon-1.0/WildAddon-1.0.lua"]:56: in function <...dOns/BagBrother/libs/WildAddon-1.0/WildAddon-1.0.lua:53> [string "=[C]"]: ? [string "@Interface/AddOns/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:19: in function <...Ons/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:15> [string "@Interface/AddOns/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:54: in function Fire'
[string "@Interface/AddOns/Ace3/AceEvent-3.0/AceEvent-3.0.lua"]:120: in function <Interface/AddOns/Ace3/AceEvent-3.0/AceEvent-3.0.lua:119>
[string "=[C]"]: ?
[string "=[C]"]: in function LoadAddOn' [string "@Interface_Vanilla/FrameXML/UIParent.lua"]:391: in function UIParentLoadAddOn'
[string "@Interface_Vanilla/FrameXML/UIParent.lua"]:418: in function `CombatLog_LoadUI'
[string "@Interface_Vanilla/FrameXML/UIParent.lua"]:722: in function <Interface_Vanilla/FrameXML/UIParent.lua:689>
[string "=[C]"]: ?

Locals: (*temporary) = "You might be running an outdated %s version! Someone in your party or guild reported having %s, please update if true."
(*temporary) = "Bagnon"
(*temporary) = nil
(*temporary) = "string expected, got nil"

im getting this same error as well in Retail WoW running Bagnon v10.2.10

1x BagBrother/core/features/updateDetection.lua:66: bad argument #3 to 'format' (string expected, got nil)
[string "=[C]"]: in function format' [string "@BagBrother/core/features/updateDetection.lua"]:66: in function Popup'
[string "@BagBrother/core/features/updateDetection.lua"]:35: in function ?' [string "@BagBrother/libs/WildAddon-1.0-2/WildAddon-1.0.lua"]:20: in function <...dOns/BagBrother/libs/WildAddon-1.0/WildAddon-1.0.lua:18> [string "@BagBrother/libs/WildAddon-1.0-2/WildAddon-1.0.lua"]:56: in function <...dOns/BagBrother/libs/WildAddon-1.0/WildAddon-1.0.lua:53> [string "=[C]"]: ? [string "@Ace3/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:19: in function <...Ons/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:15> [string "@Ace3/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:54: in function Fire'
[string "@Ace3/AceEvent-3.0-4/AceEvent-3.0.lua"]:120: in function <Ace3/AceEvent-3.0/AceEvent-3.0.lua:119>
[string "=[C]"]: ?
[string "=[C]"]: in function LoadAddOn' [string "@FrameXML/UIParent.lua"]:542: in function UIParentLoadAddOn'
[string "@FrameXML/UIParent.lua"]:681: in function `TimeManager_LoadUI'
[string "@FrameXML/UIParent.lua"]:1527: in function <FrameXML/UIParent.lua:1407>
[string "=[C]"]: ?

Locals:
(*temporary) = "|cffff0000You might be running an outdated |cffffffff%s|r version! Someone in your party or guild reported having |cffffffff%s|r, please update if true.|r"
(*temporary) = "Bagnon"
(*temporary) = nil
(*temporary) = "string expected, got nil"

Fixed internally