Error parsing node of kind 'ERROR': {Node ERROR (0, 315) - (0, 381)} disease_tree?object=eq."A viral infectious disease that involves reactivation of JC polyomavirus in immune-compromised individuals which causes the loss of white matter (which is made up of myelin, a substance the surrounds and protects nerve fibers) in multiple areas of the brain. The symptoms include hemiparesis, aphasia, dysarthria, hemianopia, cognitive impairment and coma." Err("Unexpected Node kind: ERROR")