Fatal error: Uncaught Error: Class 'PHPExcel_CachedObjectStorage_CacheBase' not found in /opt/lampp/htdocs/classes/PHPExcel/CachedObjectStorage/SQLite.php:36
Stack trace:
#0 {main}
thrown in /opt/lampp/htdocs/classes/PHPExcel/CachedObjectStorage/SQLite.php on line 36