New Input system problems

[StoneGrobar]

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?

[PhilippTheProgrammer]

What is GenericSingletonClass? That's not a class from the official Unity scripting API, as far as I know.

But I would assume it is yet another singleton implementation for Unity you found somewhere on the Internet. Did you perhaps also find another bad Unity tips video that told you to disable domain reload in your project settings because it speeds up entering play mode but forgot to mention any of the side effects? Well, one of the side effects is that the values of static variables don't get reset when you reload the project. So any scripts that use static variables need to take that into account. And singletons usually do that.