User deprecated function: Method League\Csv\AbstractCsv::createFromFileObject() is deprecated since league/csv:9.27.0, use League\Csv\AbstractCsv::from() instead in Drupal\csv_serialization\Encoder\CsvEncoder->encode() (line 143 of modules\csv_serialization\src\Encoder\CsvEncoder.php).
User deprecated function: Method League\Csv\AbstractCsv::getContent() is deprecated since league/csv:9.7.0, use League\Csv\AbstractCsv::toString() instead in Drupal\csv_serialization\Encoder\CsvEncoder->encode() (line 167 of modules\csv_serialization\src\Encoder\CsvEncoder.php).
