2x BattlePetCount/PetCard.lua:22: attempt to call global 'IsAddOnLoaded' (a nil value)
[string "@BattlePetCount/PetCard.lua"]:22: in function Setup' [string "@BattlePetCount/PetCard.lua"]:12: in function <BattlePetCount/PetCard.lua:11> [string "=[C]"]: ? [string "@Ace3/AceAddon-3.0-13/AceAddon-3.0.lua"]:66: in function <Ace3/AceAddon-3.0/AceAddon-3.0.lua:61> [string "@Ace3/AceAddon-3.0-13/AceAddon-3.0.lua"]:494: in function InitializeAddon'
[string "@Ace3/AceAddon-3.0-13/AceAddon-3.0.lua"]:619: in function <Ace3/AceAddon-3.0/AceAddon-3.0.lua:611>

Locals:
self =

{
modules = {
}
defaultModuleLibraries = {
}
name = "BattlePetCount_PetCard"
orderedModules = {
}
enabledState = true
baseName = "BattlePetCount"
defaultModuleState = true
moduleName = "PetCard"
}
(*temporary) = nil
(*temporary) = "Blizzard_Collections"
(*temporary) = "attempt to call global 'IsAddOnLoaded' (a nil value)"

Thanks for reporting the issue.

I have pushed 11.0.2-20240814-1, which fixes the issue 🙂