PhpSpreadsheet getHighestColumn() на null

#phpexcel #phpspreadsheet Вопрос: Я использую Apache2.4 PHP7.4.21 phpoffice/phpspreadsheet1.12.0 Это мой код. $reader = PhpOfficePhpSpreadsheetIOFactory::createReader('Xlsx'); $reader->setReadDataOnly(TRUE); $spreadsheet = $reader->load($filePath); $worksheet = $spreadsheet->getSheetByName('sheet1'); $highestRow = $worksheet->getHighestRow(); // e.g. 10 $highestColumn = $worksheet->getHighestColumn();…