So I've came across a bug relating to a no entry.
Our community has a modpack with several mods including the SOG DLC.
The error that's thrown is
After process of elimination, we've determined the error is coming from the SOG DLC, as each mod was loaded one by one with SOG being last, and there was no errors until SOG was loaded.
To recreate the error, simply select the FIM92 weapon from the launcher tab while in the arsenal, the error will appear.
This also happens if you equip it in-game.