Fatal error: Uncaught Error: Call to undefined function create_function() in /usr/home/xoostudio.es/web/blog/wp-content/plugins/onesignal-free-web-push-notifications/onesignal-widget.php:44 Stack trace: #0 /usr/home/xoostudio.es/web/blog/wp-content/plugins/onesignal-free-web-push-notifications/onesignal.php(18): require_once() #1 /usr/home/xoostudio.es/web/blog/wp-settings.php(255): include_once('/usr/home/xoost...') #2 /usr/home/xoostudio.es/web/blog/wp-config.php(101): require_once('/usr/home/xoost...') #3 /usr/home/xoostudio.es/web/blog/wp-load.php(37): require_once('/usr/home/xoost...') #4 /usr/home/xoostudio.es/web/blog/wp-blog-header.php(13): require_once('/usr/home/xoost...') #5 /usr/home/xoostudio.es/web/blog/index.php(17): require('/usr/home/xoost...') #6 {main} thrown in /usr/home/xoostudio.es/web/blog/wp-content/plugins/onesignal-free-web-push-notifications/onesignal-widget.php on line 44