When comparing achievement with another player we kept getting this error. Steps to replicate were to compare achievements click on FOS the click raids and hover over an achievement.
Message: …ns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua:2581: Usage: GetPreviousAchievement(achievementID)
Time: Tue Oct 25 21:42:30 2022
Count: 1
Stack: …ns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua:2581: Usage: GetPreviousAchievement(achievementID)
[string “=[C]”]: in function GetPreviousAchievement' [string "@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua"]:2581: in function Init’
[string “@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua”]:2654: in function initializer' [string "@Interface/SharedXML/Scroll/ScrollBoxListView.lua"]:283: in function InvokeInitializers’
[string “@Interface/SharedXML/Scroll/ScrollBox.lua”]:657: in function Update' [string "@Interface/SharedXML/Scroll/ScrollBox.lua"]:233: in function SetScrollPercentageInternal’
[string “@Interface/SharedXML/Scroll/ScrollBox.lua”]:151: in function FullUpdateInternal' [string "@Interface/SharedXML/Scroll/ScrollBox.lua"]:631: in function FullUpdateInternal’
[string “@Interface/SharedXML/Scroll/ScrollBox.lua”]:113: in function FullUpdate' [string "@Interface/SharedXML/Scroll/ScrollBox.lua"]:605: in function <Interface/SharedXML/Scroll/ScrollBox.lua:604> [string "=[C]"]: ? [string "@Interface/SharedXML/CallbackRegistry.lua"]:143: in function <Interface/SharedXML/CallbackRegistry.lua:142> [string "=[C]"]: ? [string "@Interface/SharedXML/CallbackRegistry.lua"]:146: in function TriggerEvent’
[string “@Interface/SharedXML/Scroll/ScrollBoxListView.lua”]:225: in function SignalDataChangeEvent' [string "@Interface/SharedXML/Scroll/ScrollBoxListView.lua"]:205: in function SetDataProvider’
[string “@Interface/SharedXML/Scroll/ScrollBox.lua”]:589: in function SetDataProvider' [string "@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua"]:2744: in function AchievementFrameComparison_UpdateDataProvider’
[string “@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua”]:673: in function AchievementFrameCategories_OnCategoryChanged' [string "@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua"]:596: in function AchievementFrameCategories_SelectElementData’
[string “@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua”]:601: in function `AchievementFrameCategories_OnCategoryClicked’
[string “@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua”]:429: in function <…ns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua:428>
Locals: (*temporary) = nil