Fatal error: Uncaught Error: Interface 'Box\Spout\Writer\WriterInterface' not found in /var/www/html/portal/vendor/box/spout/src/Spout/Writer/WriterAbstract.php:22 Stack trace: #0 {main} thrown in /var/www/html/portal/vendor/box/spout/src/Spout/Writer/WriterAbstract.php on line 22