Fatal error: Uncaught Error: Interface 'PhpOffice\PhpSpreadsheet\IComparable' not found in /home/vtsnised/public_html/anketa2.0/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Worksheet.php:28 Stack trace: #0 {main} thrown in /home/vtsnised/public_html/anketa2.0/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Worksheet.php on line 28