[kahi_scholar_person] error in author, is not a list but a string

[omazapa]

this breaks split names and compare_author

kahi_dev> db.person.find({"updated.source":"scholar"},{"last_names":1})
[
  { _id: ObjectId("667afe796e876d505162ad52"), last_names: 'De' },
  {
    _id: ObjectId("667afe796e876d505162ad56"),
    last_names: 'Sintéticos'
  },
  {
    _id: ObjectId("667afe796e876d505162ad54"),
    last_names: 'Domı́nguez'
  },
  {
    _id: ObjectId("667afe796e876d505162ad59"),
    last_names: 'Mart\\ńez'
  },
  {
    _id: ObjectId("667afe796e876d505162ad53"),
    last_names: 'Cammarata scalisi'
  },
  { _id: ObjectId("667afe796e876d505162ad5b"), last_names: 'Loyola' },
  {
    _id: ObjectId("667afe796e876d505162ad5c"),
    last_names: 'Serrano rico'
  },
  { _id: ObjectId("667afe796e876d505162ad5d"), last_names: 'Ciódaro' },
  {
    _id: ObjectId("667afe796e876d505162ad5e"),
    last_names: 'Cristancho'
  },
  { _id: ObjectId("667afe796e876d505162ad60"), last_names: 'Rivera' },
  { _id: ObjectId("667afe796e876d505162ad61"), last_names: 'Verdugo' },
  {
    _id: ObjectId("667afe796e876d505162ad63"),
    last_names: 'Piñeros guerrero'
  },
  { _id: ObjectId("667afe796e876d505162ad66"), last_names: 'Amaral' },

all the first_names are empty as well