Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method WP_Feed_Cache::create() cannot be called statically in /customers/6/e/8/bestorp.se/httpd.www/wp-includes/SimplePie/Registry.php:214 Stack trace: #0 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/class-simplepie.php(1412): SimplePie_Registry->call('Cache', 'get_handler', Array) #1 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/feed.php(821): SimplePie->init() #2 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/widgets/class-wp-widget-rss.php(64): fetch_feed('http://www.corr...') #3 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/class-wp-widget.php(380): WP_Widget_RSS->widget(Array, Array) #4 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/widgets.php(805): WP_Widget->display_callback(Array, Array) #5 /customers/6/e/8/bestorp.se/httpd.www/wp-content/themes/roadfightertheme/sidebar.php(2): dynamic_sidebar('primary-widget-...') #6 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/template.php(730): require_once('/customers/6/e/...') #7 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/template.php(676): load_template('/customers/6/e/...', true, Array) #8 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/general-template.php(136): locate_template(Array, true, true, Array) #9 /customers/6/e/8/bestorp.se/httpd.www/wp-content/themes/roadfightertheme/404.php(49): get_sidebar() #10 /customers/6/e/8/bestorp.se/httpd.www/wp-includes/template-loader.php(106): include('/customers/6/e/...') #11 /customers/6/e/8/bestorp.se/httpd.www/wp-blog-header.php(19): require_once('/customers/6/e/...') #12 /customers/6/e/8/bestorp.se/httpd.www/index.php(17): require('/customers/6/e/...') #13 {main} thrown in /customers/6/e/8/bestorp.se/httpd.www/wp-includes/SimplePie/Registry.php on line 214