Fatal error: Uncaught Error: Class 'Box\Spout\Writer\Common\Manager\WorkbookManagerAbstract' not found in /var/www/html/portal/vendor/box/spout/src/Spout/Writer/XLSX/Manager/WorkbookManager.php:14
Stack trace:
#0 {main}
thrown in /var/www/html/portal/vendor/box/spout/src/Spout/Writer/XLSX/Manager/WorkbookManager.php on line 14