This happens every session the first time I press something.

5x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'ActionButton8:SetAttribute()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function SetAttribute' [string "@FrameXML/ActionButton.lua"]:485: in function UpdatePressAndHoldAction'
[string "@FrameXML/ActionButton.lua"]:551: in function Update' [string "@FrameXML/ActionButton.lua"]:503: in function UpdateAction'
[string "@FrameXML/ActionButton.lua"]:981: in function `OnEvent'
[string "@FrameXML/ActionButton.lua"]:207: in function <FrameXML/ActionButton.lua:204>

Locals:
_ = Frame {
RegisterEvent = defined @!BugGrabber/BugGrabber.lua:491
0 =
UnregisterEvent = defined @!BugGrabber/BugGrabber.lua:491
SetScript = defined @!BugGrabber/BugGrabber.lua:491
}
event = "ADDON_ACTION_BLOCKED"
events =

Addon Version
10.2.7-retail

World of Warcraft Version
Retail

Also been getting a few of these recently.

1x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'ActionButton6:SetAttribute()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function SetAttribute' [string "@FrameXML/ActionButton.lua"]:485: in function UpdatePressAndHoldAction'
[string "@FrameXML/ActionButton.lua"]:551: in function Update' [string "@FrameXML/ActionButton.lua"]:503: in function UpdateAction'
[string "@FrameXML/ActionButton.lua"]:981: in function `OnEvent'
[string "@FrameXML/ActionButton.lua"]:207: in function <FrameXML/ActionButton.lua:204>

Locals:
_ = Frame {
RegisterEvent = defined @!BugGrabber/BugGrabber.lua:491
0 =
UnregisterEvent = defined @!BugGrabber/BugGrabber.lua:491
SetScript = defined @!BugGrabber/BugGrabber.lua:491
}
event = "ADDON_ACTION_BLOCKED"
events =

1x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'MultiBarRightButton1:SetShown()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function SetShown' [string "@FrameXML/ActionBar.lua"]:195: in function UpdateShownButtons'
[string "@FrameXML/ActionButton.lua"]:507: in function UpdateAction' [string "@FrameXML/ActionButton.lua"]:981: in function OnEvent'
[string "@FrameXML/ActionButton.lua"]:207: in function <FrameXML/ActionButton.lua:204>

Locals:
Skipped (In Encounter)

1x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'ActionButton9:SetAttribute()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function SetAttribute' [string "@FrameXML/ActionButton.lua"]:485: in function UpdatePressAndHoldAction'
[string "@FrameXML/ActionButton.lua"]:551: in function Update' [string "@FrameXML/ActionButton.lua"]:503: in function UpdateAction'
[string "@FrameXML/ActionButton.lua"]:981: in function `OnEvent'
[string "@FrameXML/ActionButton.lua"]:207: in function <FrameXML/ActionButton.lua:204>

Locals:
_ = Frame {
RegisterEvent = defined @!BugGrabber/BugGrabber.lua:491
0 =
UnregisterEvent = defined @!BugGrabber/BugGrabber.lua:491
SetScript = defined @!BugGrabber/BugGrabber.lua:491
}
event = "ADDON_ACTION_BLOCKED"
events =

After a little more testing. This issue reproduces 100% of the time with version 10.2.11 by doing the standard Assassination Rogue opener https://www.wowhead.com/guide/classes/rogue/assassination/rotation-cooldowns-pve-dps which involves two stance changes (Shadow Dance and Vanish). 10.2.10 doesn't have this problem.

So something in 10.2.10...10.2.11 doesn't play nice with stance changes.

Got this error again last evening while I was recording my gameplay. The error is the same as before and happened when I pressed Shadow Dance which changes my stance, so might be related to paging. My Shadow Dance button is on Action Bar 1 and my paging settings for Action Bar 1 is Shadow Dance Action Bar 1 i.e. don't change which action bar is shown when I Shadow Dance.

My Shadow Dance button is also a macro which only casts Shadow Dance the second time I press it. So I didn't get an error the first time I pressed the key, but did the second time.

#show
/castsequence reset=15 Shiv, Shadow Dance, Shiv
/use 13
/cast Kingsbane

1x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'ActionButton6:SetAttribute()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function SetAttribute'
[string "@FrameXML/ActionButton.lua"]:485: in function UpdatePressAndHoldAction'
[string "@FrameXML/ActionButton.lua"]:551: in function Update'
[string "@FrameXML/ActionButton.lua"]:503: in function UpdateAction'
[string "@FrameXML/ActionButton.lua"]:981: in function `OnEvent'
[string "@FrameXML/ActionButton.lua"]:207: in function <FrameXML/ActionButton.lua:204>

If there's any testing you want me to do just ask.

This appears to be reproducable on my Assassination Rogue just doing the regular opener. Although the error doesn't always occur at exactly the same place. I recorded a taint.log file of one example.
taint.log

I disabled all addons except Dominos and reproduced this problem with taintLog "2".
taint.log

Just finished a dungeon playing outlaw rogue using 10.2.10 and did trigger the same lua error but it didn't popup an error dialog and didn't prevent me pressing any keys, which is what was happening with 10.2.11 on Assassination rogue.

1x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'ActionButton11:SetAttribute()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function SetAttribute' [string "@FrameXML/ActionButton.lua"]:485: in function UpdatePressAndHoldAction'
[string "@FrameXML/ActionButton.lua"]:551: in function Update' [string "@FrameXML/ActionButton.lua"]:1068: in function OnEvent'
[string "@FrameXML/ActionButton.lua"]:302: in function <FrameXML/ActionButton.lua:279>

Locals:
_ = Frame {
RegisterEvent = defined @!BugGrabber/BugGrabber.lua:491
0 =
UnregisterEvent = defined @!BugGrabber/BugGrabber.lua:491
SetScript = defined @!BugGrabber/BugGrabber.lua:491
}
event = "ADDON_ACTION_BLOCKED"
events =

I'm not getting the above error with 12.1.3 with the small amount of testing I've done so far on a target dummy. I'm raiding tonight so more testing coming soon.

No errors with 12.1.3 during 3 hour raid.