Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Calculation\Statistical\VarianceBase" not found in /var/www/html/lapalina/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Statistical/Variances.php:7 Stack trace: #0 {main} thrown in /var/www/html/lapalina/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Statistical/Variances.php on line 7