Help! Anyone knows what AddOn is causing this?

https://i.ibb.co/1Tv68bK/asdadsadsad...dassdadsas.png

I get this message everywhere in the world but it's most prevalent in BG's.
"You can only whisper to members of your alliance."

ERR_CHAT_WRONG_FACTION
You can only whisper to members of your alliance.

Inside battleground when mercenary mode is activated and horde join alliance team for example you can talk to them being part of the same team, but when the game ends you are no longer able to do so

Are you using TrashTalk or similar addon by any chance?

Thanks for the reply! I'm not using mercenary mode but I guess it could have something to do with other people using it and being in my team. Not using TrashTalk or any other addon that I know of that affects my chat.

Inside big bg's (the screenshot is from AV) that message is spammed constantly without any input from me what so ever.

it shouild be DBM addon if I remember correctly (which attempt ti communicate with DBM used by other players).

Just try 1 test: disable DBM before to join the next BG

Hey, I am Horde, so not using mercenary mode and this is showing to me also. I don't use DBM addon. My addons right now are:

Bartender4
CompactRaidFrames
Easy Frames
GearScoreLite
Lorti UI
MoveAnything
OmniCC
OmniCC Config
OneBag3
TellMeWhen

For now I think that it might be GearScoreLite, I went one BG with this addon off and it didn't show.

Any addon that uses the addon channel?

I have GearScoreLite too same problem.