rescue ActiveRecord::RecordInvalid  => e
          import_result.error_msg = "FAIL[#{row_num}]: fail save manifestation. (record invalid) #{e.message}"
          Rails.logger.error "FAIL[#{row_num}]: fail save manifestation. (record invalid) #{e.message}"
          Rails.logger.error "FAIL[#{row_num}]: #{$@}"
          manifestation = nil