Fatal error: Uncaught Error: Call to undefined method PKP\userGroup\UserGroup::withContextIds() in C:\xampp\htdocs\revistaHCT\plugins\generic\webFeed\WebFeedGatewayPlugin.php:99 Stack trace: #0 C:\xampp\htdocs\revistaHCT\pages\gateway\GatewayHandler.php(215): APP\plugins\generic\webFeed\WebFeedGatewayPlugin->fetch(Array, Object(APP\core\Request)) #1 [internal function]: APP\pages\gateway\GatewayHandler->plugin(Array, Object(APP\core\Request)) #2 C:\xampp\htdocs\revistaHCT\lib\pkp\classes\core\PKPRouter.php(334): call_user_func(Array, Array, Object(APP\core\Request)) #3 C:\xampp\htdocs\revistaHCT\lib\pkp\classes\core\PKPPageRouter.php(278): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(APP\core\Request), Array, false) #4 C:\xampp\htdocs\revistaHCT\lib\pkp\classes\core\Dispatcher.php(165): PKP\core\PKPPageRouter->route(Object(APP\core\Request)) #5 C:\xampp\htdocs\revistaHCT\lib\pkp\classes\core\PKPApplication.php(395): PKP\core\Dispatcher->dispatch(Object(APP\core\Request)) #6 C:\xampp\htdocs\revistaHCT\index.php(21): PKP\core\PKPApplication->execute() #7 {main} thrown in C:\xampp\htdocs\revistaHCT\plugins\generic\webFeed\WebFeedGatewayPlugin.php on line 99