Interface\AddOns\ConvertRatings\ConvertRatings.lua:142: Usage: GetItemInfo(itemID|"name"|"itemlink")
Count: 2

Call Stack:
[C]: ?
[C]: in function GetItemInfo' Interface\AddOns\ConvertRatings\ConvertRatings.lua:142: in function <Interface\AddOns\ConvertRatings\ConvertRatings.lua:114> [C]: ? [C]: in function SetCompareItem'
Interface\FrameXML\GameTooltip.lua:282: in function GameTooltip_ShowCompareItem' [string "*:OnTooltipSetItem"]:3: in function <[string "*:OnTooltipSetItem"]:1> [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: ? [C]: in function SetBagItem'
Interface\FrameXML\ContainerFrame.lua:1149: in function `ContainerFrameItemButton_OnEnter'
[string ":OnEnter"]:1: in function <[string ":OnEnter"]:1>

What were you doing when you received this error? Were you mousing over something specific or are you getting it all the time? Need a little more info to investigate.

1、log in
2、open bags
3、move mouse on weapons
4、bugs show

I set the CVar： SetCVar("alwaysCompareItems", 1)

i set the cvar as you did, logged in and moused over the other artifact weapons in my bag, did not get the error you reported. I don't have any non artifact weapons currently, I will go kill some old bosses and see if the error occurs with non artifact weapons

i went and acquired some non artifact weapons, i tried with artifact equipped and non artifact mouse-over, non artifact equipped, and mouse-over artifact, non artifact equipped and non artifact mouse-over. Unable to reproduce this error

Are you sure it was from mousing over a weapon?

Sure。
And ，I Finally found Is “ztip”·s problem --ztip is a mousetooltip addon
Truly sorry。。

no problem, closing ticket