InvalidOperationException: Operation is not valid due to the current state of the object
System.Linq.Enumerable.First[WeaponAnimation] (IEnumerable1 source, System.Func2 predicate, Fallback fallback)
System.Linq.Enumerable.First[WeaponAnimation] (IEnumerable1 source, System.Func2 predicate)
PlayerAnimator.OnEquipmentChanged (.Equipment newItem, .Equipment oldItem) (at Assets/Scripts/Anim/PlayerAnimator.cs:45)
EquipmentManager.Equip (.Equipment newItem) (at Assets/Scripts/Items/EquipmentManager.cs:85)
Equipment.Use () (at Assets/Scripts/Items/Equipment.cs:16)
InventorySlot.UseItem () (at Assets/Scripts/Inventory/InventorySlot.cs:46)
UnityEngine.Events.InvokableCall.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:165)
UnityEngine.Events.UnityEvent.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent_0.cs:58)
UnityEngine.UI.Button.Press () (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:36)
UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:45)
UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:50)
UnityEngine.EventSystems.ExecuteEvents.Execute[IPointerClickHandler] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.EventFunction`1 functor) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:261)
UnityEngine.EventSystems.EventSystem:Update()
This error occurs when I try to equip a pickaxe in place of a sword.