Describe the bug

On Wotlk classic, doing Twin valkyrs in both 10 and 25man, when they start doing an ability, I get the LUA error

Do you have an error log of what happened?

I dont have all of it, I screenshotted couple parts of it sorry.

To Reproduce

Screenshots

Flame leviathan lua error

Did you try having DeadlyBossMods as the only enabled addon and everything else (especially something like ElvUI) disabled?

No and I dont use Elvui

Which version of DeadlyBossMods are you using?
DBM-3.4.42-wrath

Was it working in a previous version? If yes, which was the last good one?

No clue, but it also happened on flame leviathian (last screenshot ) and I never had that happened before
Additional context