Fatal error: Uncaught Error: Class 'Box\Spout\Writer\Exception\WriterException' not found in /var/www/dev/public/vendor/box/spout/src/Spout/Writer/Exception/Border/InvalidNameException.php:8 Stack trace: #0 {main} thrown in /var/www/dev/public/vendor/box/spout/src/Spout/Writer/Exception/Border/InvalidNameException.php on line 8