Fatal error: Uncaught Error: Interface "Box\Spout\Reader\IteratorInterface" not found in /home2/cp334332/public_html/examcenter/vendor/box/spout/src/Spout/Reader/XLSX/SheetIterator.php:13 Stack trace: #0 {main} thrown in /home2/cp334332/public_html/examcenter/vendor/box/spout/src/Spout/Reader/XLSX/SheetIterator.php on line 13