Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Calculation\Engineering\ConvertBase' not found in /home/heranore/public_html/live-hotely/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Engineering/ConvertHex.php:8 Stack trace: #0 {main} thrown in /home/heranore/public_html/live-hotely/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Engineering/ConvertHex.php on line 8