New error for Weapon window

[Kirnath]

my husband and I keep getting this error: I know it's blizzard related but we use your addon set so we weren't sure if this was something you fix or blizzard fixes. Anyway it pops up a blank artifact window with a message like can't view this artifact. Usually upon logging in.

6x ...e\Blizzard_ArtifactUI\Blizzard_ArtifactUI.lua:41: attempt to compare number with nil
...e\Blizzard_ArtifactUI\Blizzard_ArtifactUI.lua:41: in function 'ArtifactUI_CanViewArtifact'
...ddOns\Blizzard_ArtifactUI\Blizzard_ArtifactPerks.lua:680: in function 'EvaluateRelics'
...ddOns\Blizzard_ArtifactUI\Blizzard_ArtifactPerks.lua:541: in function <...ddOns\Blizzard_ArtifactUI\Blizzard_ArtifactPerks.lua:539>
[C]:: in function 'SetShown'
...e\Blizzard_ArtifactUI\Blizzard_ArtifactUI.lua:172: in function 'SetTab'
...e\Blizzard_ArtifactUI\Blizzard_ArtifactUI.lua:138: in function 'EvaulateForgeState'
...e\Blizzard_ArtifactUI\Blizzard_ArtifactUI.lua:70: in function <...e\Blizzard_ArtifactUI\Blizzard_ArtifactUI.lua:67>
[C]:: in function 'Show'
FrameXML\UIParent.lua:2336: in function 'SetUIPanel'
FrameXML\UIParent.lua:2154: in function 'ShowUIPanel'
FrameXML\UIParent.lua:2048: in function <FrameXML\UIParent.lua:2044>
[C]:: in function 'SetAttribute'
FrameXML\UIParent.lua:2830: in function <FrameXML\UIParent.lua:2818>
[C]:: in function 'ShowUIPanel'
FrameXML\UIParent.lua:1466: in function <FrameXML\UIParent.lua:891