public class Generate : NetworkBehaviour
{
    private NetworkVariable<float> decreament = new NetworkVariable<float>(10);
    void Update()
    {
        decreament.Value -= Time.deltaTime;
    }
}

This code gives me an error when I run this code in Unity and start the host and If I directly close the game from the unity editor then this code gives me

NullReferenceException: Object reference not set to an instance of an object
Unity.Netcode.NetworkVariableBase.MarkNetworkBehaviourDirty ()

this error in console.

I’m new in Unity and I Don’t know How to resolve this problem ….
Can Anyone explain this error to me …