after the last reset i cant announce rares anymore when i target a rare and type /rare. my girlfriend also tried doing the same but it didnt work for her too.

I am also having this issue!

I also keep getting error messages when I click on chat channels:

Message: Interface\AddOns\AnnounceRare\AnnounceRare.lua:270: bad argument #3 to 'format' (string expected, got nil)
Time: Sat Apr 25 11:31:04 2020
Count: 1
Stack: Interface\AddOns\AnnounceRare\AnnounceRare.lua:270: bad argument #3 to 'format' (string expected, got nil)
[string "=[C]"]: in function format' [string "@Interface\AddOns\AnnounceRare\AnnounceRare.lua"]:270: in function <Interface\AddOns\AnnounceRare\AnnounceRare.lua:266> [string "=(tail call)"]: ? [string "@Interface\AddOns\Blizzard_CombatLog\Blizzard_CombatLog.lua"]:3520: in function <...ace\AddOns\Blizzard_CombatLog\Blizzard_CombatLog.lua:3461> [string "=[C]"]: in function SetItemRef'
[string "@interface\FrameXML\ChatFrame.lua"]:3735: in function `ChatFrame_OnHyperlinkShow'
[string ":OnHyperlinkClick"]:1: in function <[string ":OnHyperlinkClick"]:1>

Locals: (*temporary) = "Link Type: %s, ID: %s, Health: %s, Max: %s"
(*temporary) = "channel"
(*temporary) = "GUILD"
(*temporary) = nil
(*temporary) = nil
(*temporary) = "string expected, got nil"

With debug running, getting AR2 Log: Invalid ID provided for example on Bonepicker.

Still getting the Death Announce prompt. This works. Except when debug is running when I get a LUA error:

1x AnnounceRare\AnnounceRare-2.0.7.lua:270: bad argument #3 to 'format' (string expected, got nil)
[string "=[C]"]: in function format' [string "@AnnounceRare\AnnounceRare-2.0.7.lua"]:270: in function <AnnounceRare\AnnounceRare.lua:266> [string "=(tail call)"]: ? [string "=[C]"]: in function SetItemRef'
[string "@FrameXML\ChatFrame.lua"]:3735: in function `ChatFrame_OnHyperlinkShow'
[string ":OnHyperlinkClick"]:1: in function <[string ":OnHyperlinkClick"]:1>

Locals:
(*temporary) = "Link Type: %s, ID: %s, Health: %s, Max: %s"
(*temporary) = "AR2_DEATH"
(*temporary) = "152001"
(*temporary) = nil
(*temporary) = nil
(*temporary) = "string expected, got nil"

I'm also having the issue; AR2 Log: Invalid ID provided when attempting to type /rare with a rare targeted.

Same issue here, as posted above.

i think i found the issue, in AnnounceRare.lua line 669
replace
self:AnnounceRare()
with
self:AnnounceRare(tarId, UnitHealth("target"), UnitHealthMax("target"))

TY @destinychoice works perfectly

Works great! Seems the announce death has a similar issue though.

Yeah, so with the fix above, Announce won't work with debugging off (same error,does not qualify) but does work if debugging mode is enabled.
It's the opposite for announcing the death: Works when debugging is off, but doesn't when debugging is on -- the chat isn't clickable.

i still dont know why the developer isnt fixing the bugs yet

I submitted a PR to fix this, hopefully @cr4ckp0t sees it. Also, I was able to get this working without debug by changing the line to this:

self:AnnounceRare(tonumber(tarId), tonumber(UnitHealth("target")), tonumber(UnitHealthMax("target")))

You guys have to chill. I do not get paid to do any of the projects I have (roughly 20 or so), so I do them as I have time.

In any event, I had already fixed the issue but hadn't had time to commit and release it. Doing it now.

Thanks, Cr4ckp0t. Most of us are patient and only reporting to help out, understanding that life is busy and you're doing this for free.
Appreciate it.