Fatal error: Uncaught Error: Interface "PKP\services\interfaces\EntityPropertyInterface" not found in C:\xampp\htdocs\ojs\lib\pkp\classes\services\PKPSiteService.php:34
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\ojs\lib\pkp\classes\services\PKPSiteService.php on line 34