We are getting the same error. I'm not seeing any patches to apply. Please help. Thanks!
Error: Property access is not allowed yet (0)
#0 /var/www/html/107016/applications/core/modules/front/discover/streams.php(408): IPS\Content\Search\Mysql\_Query->search(NULL, NULL, 17)
#1 /var/www/html/107016/system/Dispatcher/Controller.php(118): IPS\core\modules\front\discover\_streams->manage()
#2 /var/www/html/107016/applications/core/modules/front/discover/streams.php(65): IPS\Dispatcher\_Controller->execute()
#3 /var/www/html/107016/system/Dispatcher/Dispatcher.php(153): IPS\core\modules\front\discover\_streams->execute()
#4 /var/www/html/107016/index.php(13): IPS\_Dispatcher->run()
#5 {main}