Fatal error: Uncaught Error: Class 'Box\Spout\Writer\Exception\WriterException' not found in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/lib/spout/src/Spout/Writer/Exception/WriterNotOpenedException.php:8 Stack trace: #0 {main} thrown in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/lib/spout/src/Spout/Writer/Exception/WriterNotOpenedException.php on line 8