Fatal error: Uncaught Error: Interface "Psr\SimpleCache\CacheInterface" not found in /home/demohost/hospital.demohost.in/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Collection/Memory/SimpleCache1.php:14 Stack trace: #0 {main} thrown in /home/demohost/hospital.demohost.in/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Collection/Memory/SimpleCache1.php on line 14