How to kill Slavers

[Crawller]

I'm so angry. A few days ago I made a small post with some defensive walls. The problem came when a day a group of slavers entry on my base (the door was locked lol) and they started to fight with my conscripts. Obviously that bastards did havocs on my territory.

Now I have two of my members with the tag (slave) and they're hidden in a house and a entire group of slavers inside of my walls and they dont go out.

So Im training some of my characters for fight, but I dont know how to do this.

All my group are hidden and the production stopped.

Any suggestion of strategy for defeat that bastards?

They have lvl 18-24 on attack.

[Hatsune_Neko]

the not leaving is a bug as is walking through walls
try rebuilding your navmesh Ctrl + Shift + f11