Error parsing node of kind 'ERROR': {Node ERROR (0, 46) - (0, 58)} disease_tree?object=eq.mixed oligodendroglioma-astrocytoma Ok(Select { table: "\"disease_tree\"", select: [], filter: [Filter { lhs: "\"object\"", operator: Equals, rhs: String("'mixed oligodendroglioma'") }], window: None, group_by: [], having: [], order_by: [], limit: None, offset: None })