импортировать XLSX в БД (postgresql)

Question

Я новичок, так что не ругайтесь. Я использую Postgresql, но это не сработало. Получил ошибку. Мне нужно импортировать файл Excel в готовую таблицу. Таблица Excel состоит из

код рубина:

  def self.import_csv
  text = File.read("/home/dayanov-sa/Рабочий стол/копия инвест карты/ExportInventoryData.xlsx")
     csv = CSV.parse(text, :headers => true)
     csv.each do |row|
        row = row.to_hash.with_indifferent_access
        candidate = ImportPropertyObject.new(row)
        candidate.save
     end

Мне нужно загрузить все столбцы в базу данных

 id serial NOT NULL,
  ao_1_aoid character varying,
  ao_1_shortname character varying,
  ao_1_formalname character varying,
  ao_1_node_id integer,
  ao_2_aoid character varying,
  ao_2_shortname character varying,
  ao_2_formalname character varying,
  ao_2_node_id integer,
  ao_3_aoid character varying,
  ao_3_shortname character varying,
  ao_3_formalname character varying,
  ao_3_node_id integer,
  ao_4_aoid character varying,
  ao_4_shortname character varying,
  ao_4_formalname character varying,
  ao_4_node_id integer,
  ao_5_aoid character varying,
  ao_5_shortname character varying,
  ao_5_formalname character varying,
  ao_5_node_id integer,
  ao_village_council_aoid character varying,
  ao_village_council_shortname character varying,
  ao_village_council_formalname character varying,
  ao_village_council_node_id integer,
  village_council_guid character varying,
  locality_guid character varying,
  exam_card character varying,
  all_correct character varying,
  cadastre_number character varying,
  condition_number character varying,
  oks_kind character varying,
  endpoint_guid character varying,
  stead_number character varying,
  house_number character varying,
  build_number character varying,
  struc_number character varying,
  room_number character varying,
  level_number character varying,
  linked_exam_card_numbers character varying,
  permitted_usage character varying,
  purpose_use character varying,
  actual_use character varying,
  footage character varying,
  wall_material character varying,
  levels_count character varying,
  underground_levels character varying,
  manufactured_year character varying,
  overhaul_year character varying,
  infra_electricity character varying,
  infra_gas character varying,
  infra_water character varying,
  infra_heat character varying,
  infra_sewer character varying,
  land_type character varying,
  subject_of_law_type character varying,
  discrepancy_footage character varying,
  discrepancy_boundary character varying,
  discrepancy_use character varying,
  discrepancy_unautorized_actions character varying,
  discrepancy_wall_material character varying,
  discrepancy_levels_count character varying,
  discrepancy_level_mismatch character varying,
  discrepancy_living_type character varying,
  discrepancy_factal_cadastre_quartal character varying,
  duplicate_exam_card_number character varying,
  type_of_law character varying,
  subject_of_law character varying,
  basis_document character varying,
  basis_document_number character varying,
  basis_document_date character varying,
  foto_1_name character varying,
  foto_2_name character varying,
  cause_of_change character varying,
  spec_note_owner_resistance character varying,
  spec_note_invalid_exam_card character varying,
  spec_note_factal_absent character varying,
  spec_note_additional_notes character varying,
  correct_landmark_information_presence character varying,
  general_data_hash character varying,
  service_content json,
  update_date timestamp without time zone,
  actual_status integer,
  status_date timestamp without time zone,
  counted integer,
  type_property integer,
  founded_in_fias boolean DEFAULT false,
  founded_in_rosreestr boolean DEFAULT false,
  created_at timestamp without time zone NOT NULL,
  updated_at timestamp without time zone NOT NULL,
  fias_ao_guid character varying,
  file_path character varying,
  CONSTRAINT import_property_objects_pkey PRIMARY KEY (id)

одна из ошибок: 2.4.4: 015> StatisticReportsGroup.import_csv

ArgumentError: неверная последовательность байтов в UTF-8