Fatal error: Uncaught Error: Interface "Box\Spout\Common\Manager\OptionsManagerInterface" not found in /home2/cp334332/public_html/examcenter/vendor/box/spout/src/Spout/Common/Manager/OptionsManagerAbstract.php:8 Stack trace: #0 {main} thrown in /home2/cp334332/public_html/examcenter/vendor/box/spout/src/Spout/Common/Manager/OptionsManagerAbstract.php on line 8