Error parsing node of kind 'ERROR': {Node ERROR (0, 315) - (0, 424)} disease_tree?object=eq."A vulva squamous cell carcinoma that is rapidly growing, self-limited, and characterized by the presence of a central crater that contains squamous cells. The proliferating squamous cells infiltrate the dermis below and produce keratin masses that are pushed towards the surface of the tumor. It is considered a variant of well-differentiated squamous cell carcinoma with distinct clinical behavior." Err("Unexpected Node kind: ERROR")