InvalidOperationException: Structural changes are not allowed while iterating over entities. Please use EntityCommandBuffer instead

InvalidOperationException: Structural changes are not allowed while iterating over entities. Please use EntityCommandBuffer instead.
Unity.Entities.EntityDataAccess.CheckIsStructuralChange () (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/EntityDataAccess.cs:336)
Unity.Entities.EntityDataAccess.BeforeStructuralChange () (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/EntityDataAccess.cs:410)
Unity.Entities.EntityDataAccess.BeginStructuralChanges () (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/EntityDataAccess.cs:420)
Unity.Entities.EntityManager.DestroyEntityInternal (Unity.Entities.Entity* entities, System.Int32 count) (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/EntityManager.cs:5001)
Unity.Entities.EntityManager.DestroyEntity (Unity.Entities.Entity entity) (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/EntityManager.cs:3475)
Pathfinding.FollowerEntity.OnDisable () (at Assets/Plugins/com.arongranberg.astar/Core/AI/FollowerEntity.cs:494)
UnityEngine.GameObject:SetActive(GameObject, Boolean)
SoldierTeamItem_Seek:OnUpdate() (at Assets/Scripts/BehaviorScripts/SoldierTeamItem/SoldierTeamItem_Seek.cs:38)
Opsive.BehaviorDesigner.Runtime.Tasks.StackedTask:OnUpdate() (at ./Packages/com.opsive.behaviordesigner/Runtime/Tasks/StackedTask.cs:231)
Opsive.BehaviorDesigner.Runtime.Systems.TaskObjectSystem:OnUpdate(SystemState&) (at ./Packages/com.opsive.behaviordesigner/Runtime/Systems/TaskObjectSystem.cs:97)
Opsive.BehaviorDesigner.Runtime.Systems.TaskObjectSystem:__codegen__OnUpdate(IntPtr, IntPtr)
Unity.Entities.<>c__DisplayClass9_0:<SelectBurstFn>b__0(IntPtr, IntPtr) (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/SystemBaseRegistry.cs:249)
Unity.Entities.UnmanagedUpdate_0000167D$BurstDirectCall:wrapper_native_indirect_000001923BE13590(IntPtr&, Void*)
Unity.Entities.UnmanagedUpdate_0000167D$BurstDirectCall:Invoke(Void*)
Unity.Entities.WorldUnmanagedImpl:UnmanagedUpdate(Void*) (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/WorldUnmanaged.cs:825)
Unity.Entities.WorldUnmanagedImpl:UpdateSystem(SystemHandle) (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/WorldUnmanaged.cs:891)
Unity.Entities.ComponentSystemGroup:UpdateAllSystems() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:717)
Unity.Entities.ComponentSystemGroup:OnUpdate() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:681)
Opsive.BehaviorDesigner.Runtime.Groups.TraversalTaskSystemGroup:OnUpdate() (at ./Packages/com.opsive.behaviordesigner/Runtime/Groups/TaskSystemGroup.cs:33)
Unity.Entities.SystemBase:Update() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/SystemBase.cs:418)
Unity.Entities.ComponentSystemGroup:UpdateAllSystems() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:723)
Unity.Entities.ComponentSystemGroup:OnUpdate() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:681)
Opsive.BehaviorDesigner.Runtime.Groups.TraversalSystemGroup:OnUpdate() (at ./Packages/com.opsive.behaviordesigner/Runtime/Groups/TraversalSystemGroup.cs:43)
Unity.Entities.SystemBase:Update() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/SystemBase.cs:418)
Unity.Entities.ComponentSystemGroup:UpdateAllSystems() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:723)
Unity.Entities.ComponentSystemGroup:OnUpdate() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:681)
Opsive.BehaviorDesigner.Runtime.Groups.BehaviorTreeSystemGroup:OnUpdate() (at ./Packages/com.opsive.behaviordesigner/Runtime/Groups/BehaviorTreeSystemGroup.cs:59)
Unity.Entities.SystemBase:Update() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/SystemBase.cs:418)
Unity.Entities.ComponentSystemGroup:UpdateAllSystems() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:723)
Unity.Entities.ComponentSystemGroup:OnUpdate() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ComponentSystemGroup.cs:681)
Unity.Entities.SystemBase:Update() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/SystemBase.cs:418)
Unity.Entities.DummyDelegateWrapper:TriggerUpdate() (at ./Library/PackageCache/com.unity.entities@1.3.10/Unity.Entities/ScriptBehaviourUpdateOrder.cs:523)