Console error when applying material to mesh

I'm trying to apply MeshStandardMaterial to a mesh of a GLTF imported model. The GLTF model for testing is a simple cube exported from Blender.

After succesfully load the GLTF model I did:

this.material = new THREE.MeshStandardMaterial({
    map: this.texture,
})


this.cubePost2Model = this.resources.items.cubePost2.scene

this.cubePost2Model.traverse((child) =>
{
    if(child instanceof THREE.Mesh)
    {
        child.castShadow = true
        child.material = this.material  // This line throw the error
        console.log(child)              // Returns succesfully one mesh
    }
})

this.scene.add(this.cubePost2Model)

In the previous code, this line: child.material = this.material throw an error in the console:

Uncaught TypeError: Cannot read properties of undefined (reading 'visible')