There has been a bug since the rust update.
(17:37:44) | Concave Mesh Colliders are not supported when used with dynamic Rigidbody GameObjects.
Either make the Mesh Collider convex, or make the Rigidbody kinematic. Scene hierarchy path "assets/content/vehicles/modularcar/4module_car_spawned.entity.prefab/assets/content/vehicles/modularcar/module_entities/1module_cockpit_armored.prefab/assets/prefabs/npc/autoturret/autoturret_deployed.prefab/sentry", Mesh name "sentry.base_COL"
(17:37:44) | Concave Mesh Colliders are not supported when used with dynamic Rigidbody GameObjects.
Either make the Mesh Collider convex, or make the Rigidbody kinematic. Scene hierarchy path "assets/content/vehicles/modularcar/4module_car_spawned.entity.prefab/assets/content/vehicles/modularcar/module_entities/2module_camper.prefab/assets/prefabs/npc/autoturret/autoturret_deployed.prefab/sentry", Mesh name "sentry.base_COL"
( car turrets )