New input system problems

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1

Hi, so I am having problem with a new input system. I have an Input manager singleton class that looks like this

public class InputManager : GenericSingletonClass<InputManager>
    {
        private Controlls _controls;
        public Controlls.MovementActions MovementActions;
        public Controlls.SwitchingActions SwitchingActions;

        public override void Awake()
        {
            base.Awake();   
            _controls = new Controlls();
            MovementActions = _controls.Movement;
            SwitchingActions = _controls.Switching;
        }

        private void OnEnable()
        {
            MovementActions.Moving.Enable();
            MovementActions.Action.Enable();
            MovementActions.Jump.Enable();
            MovementActions.CameraControll.Enable();
            MovementActions.CameraActivation.Enable();
        }

        private void OnDisable()
        {
            MovementActions.Moving.Disable();
            MovementActions.Action.Disable();
            MovementActions.Jump.Disable();
            MovementActions.CameraControll.Disable();
            MovementActions.CameraActivation.Disable();
        }
    }

and I am using events from input actions like this

 private void OnEnable()
        {
            InputManager.Instance.MovementActions.Action.performed += UseAction;
        }

        private void OnDisable()
        {
            InputManager.Instance.MovementActions.Action.performed -= UseAction;
        }

and everything works correctly, untill I close and open the project back up. When I reopen the project and go into play mode I get exceptions for every input action in controlls.inputactions/ its generated script, like this

NullReferenceException: Object reference not set to an instance of an object
MazeGame.Inputs.Controlls+MovementActions.get_Action () (at Assets/_Scripts/Inputs/Controlls.cs:392)
MazeGame.Characters.Pickup.OnEnable () (at Assets/_Scripts/Character/Pickup.cs:23)

Any ideas what can be the problem?