Fatal error: Uncaught Error: Class "Box\Spout\Writer\Exception\WriterException" not found in /home/marketo/demo.marketoo.com.bd/vendor/box/spout/src/Spout/Writer/Exception/WriterNotOpenedException.php:8 Stack trace: #0 {main} thrown in /home/marketo/demo.marketoo.com.bd/vendor/box/spout/src/Spout/Writer/Exception/WriterNotOpenedException.php on line 8