error CS0246: The type or namespace name 'Vrm10Expression' could not be found (are you missing a using directive or an assembly reference?)

[matiasstornini]

I installed the package in 3 new projects and the one I was working on, I have the perfect installation, the VRM works and all that, but in one script it doesn't and that error appears.

"Assets\Personaje\TestParpadeo.cs(4,7): error CS0246: The type or namespace name 'VRM' could not be found (are you missing a using directive or an assembly reference?)

using UnityEngine;
using System.Collections;
using UniVRM10;

public class TestParpadeo : MonoBehaviour
{
    private Vrm10Expression vrmExpression;

    void Start()
    {
        Debug.Log("Iniciando TestParpadeo...");
        vrmExpression = GetComponent<Vrm10Expression>();

        if (vrmExpression != null)
        {
            Debug.Log("<color=green>ÉXITO:</color> Componente Vrm10Expression encontrado. El paquete UniVRM está funcionando correctamente.");
            StartCoroutine(BlinkOnce());
        }
        else
        {
            Debug.LogError("<color=red>FALLO:</color> No se encontró el componente Vrm10Expression. Asegúrate de que este script esté en el objeto raíz del Prefab VRM que se generó al importar.");
        }
    }
    private IEnumerator BlinkOnce()
    {
        yield return new WaitForSeconds(2.0f);
        Debug.Log("Ejecutando parpadeo de prueba...");
        vrmExpression.Proxy.SetValue(ExpressionPreset.blink, 1.0f);

        yield return new WaitForSeconds(0.1f);
        vrmExpression.Proxy.SetValue(ExpressionPreset.blink, 0.0f);
        
        Debug.Log("Parpadeo de prueba finalizado.");
    }
}