Good morning @Intense_menu2 and welcome to the Conan Exiles forums.
Your companions can sometimes cross the ground to find themselves under the map, however they can be recovered by removing the building blocks under which they are located.
This sometimes happens when a nearby structure is built or replaced.
It’s an old bug that comes back from time to time, according to recent reports it appears that when the enslaved NPCs disappear under the map, they continue to fall and end up dying.
There is currently a glich used by evil people to kill other players’ NPCs.
To find out the exact cause of your problem, take a screenshot of the event log and post it on the forum .
good luck
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