Fatal error: Uncaught Error: Class "PKP\plugins\GatewayPlugin" not found in C:\xampp\htdocs\journal\plugins\generic\announcementFeed\AnnouncementFeedGatewayPlugin.php:25 Stack trace: #0 {main} thrown in C:\xampp\htdocs\journal\plugins\generic\announcementFeed\AnnouncementFeedGatewayPlugin.php on line 25