follow macro fails

[Walkerbo]

Describe the problem

My follow macro no longer works. It used to mount and then target a named player then after 1.8 seconds follow.

/cleartarget
/use Jeweled Onyx Panther
/tar [exists][nodead]Astirral
/tar [exists][nodead]Leelee
/tar [exists][nodead]Imitatia
/tar [exists][nodead]Evellarize
/tar [exists][nodead]Luminize
/tar [exists][nodead]Timtam
/tar [exists][nodead]Priestice
/tar [exists][nodead]Frostangel
/tar [exists][nodead]Evilarise
/in 1.8 /follow

What steps will reproduce the problem?

1. Create the above macro
2. Substitute names for players that you know
3. Click macro when in range

What version of the addon are you using? (Stating 'latest' is not useful)

SlashIn-v10.0.1.zip

Do you have an error log of what happened?

1x [ADDON_ACTION_BLOCKED] AddOn 'SlashIn' tried to call the protected function 'UNKNOWN()'.
[string "@!BugGrabber/BugGrabber.lua"]:480: in function <!BugGrabber/BugGrabber.lua:480>
[string "=[C]"]: ?
[string "=[C]"]: in function `SendChatMessage'
[string "@FrameXML/ChatFrame.lua"]:4912: in function <FrameXML/ChatFrame.lua:4887>
[string "=[C]"]: in function `xpcall'
[string "@SlashIn/SlashIn.lua"]:15: in function <SlashIn/SlashIn.lua:13>
[string "@SlashIn/SlashIn.lua"]:32: in function <SlashIn/SlashIn.lua:32>

[funkydude]

When did you last try this and it was working?

[Walkerbo]

Pre dragonflight this was working properly for me.

[funkydude]

If the last time you tested this was pre-dragonflight, then this is most likely intentional breakage by Blizzard.