This error isn't related to the OA mod here but from another addon because it doesn't add [actor_hud_brown_trench] anywhere.
Though after a search on google I found a deleted but cached pastbin where [actor_hud_brown_trench] is listed in the actor.ltx file, that's where you should search your missing code probably.
T0urmy
joined
This member has provided no bio about themself...