org.apache.sling.scripting.sightly.SightlyException: Identifier it.adacto.sammontana.foundation.core.models.api.v1.Header cannot be correctly instantiated by the Use API

Cannot serve request to /content/sammontana-it/home/gelati-all-italiana/prodotti/torte-e-tranci/torta-st-honore/_jcr_content/root/header.nocache.html/sammontana-website/components/structure/header/v1/header on this server