Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Calculation\Statistical\VarianceBase' not found in /home/vtsnised/public_html/anketa2.0/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Statistical/Variances.php:7 Stack trace: #0 {main} thrown in /home/vtsnised/public_html/anketa2.0/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Statistical/Variances.php on line 7