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Fatal error: Uncaught ValueError: DOMDocument::loadHTML(): Argument #1 ($source) must not be empty in /var/www/dev/azhigalin/shared/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Html.php:694 Stack trace: #0 /var/www/dev/azhigalin/shared/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Html.php(694): DOMDocument->loadHTML() #1 /var/www/dev/azhigalin/shared/pivot/html2xls_impl.php(30): PhpOffice\PhpSpreadsheet\Reader\Html->loadFromString() #2 {main} Next PhpOffice\PhpSpreadsheet\Reader\Exception: Failed to load content as a DOM Document in /var/www/dev/azhigalin/shared/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Html.php:699 Stack trace: #0 /var/www/dev/azhigalin/shared/pivot/html2xls_impl.php(30): PhpOffice\PhpSpreadsheet\Reader\Html->loadFromString() #1 {main} thrown in /var/www/dev/azhigalin/shared/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Html.php on line 699