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 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-includes/SimplePie/Registry.php:214 Stack trace: #0 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-includes/class-simplepie.php(1412): SimplePie_Registry->call('Cache', 'get_handler', Array) #1 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-content/plugins/feedwordpress/feedwordpress.php(1958): SimplePie->init() #2 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-content/plugins/feedwordpress/syndicatedlink.class.php(102): FeedWordPress::fetch(Object(SyndicatedLink), Array) #3 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-content/plugins/feedwordpress/syndicatedlink.class.php(141): SyndicatedLink->fetch() #4 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-content/plugins/feedwordpress/feedwordpress.php(900): SyndicatedLink->poll(NULL) #5 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-content/plugins/feedwordpress/feedwordpress.php(1621): FeedWordPress->update() #6 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-includes/class-wp-hook.php(287): FeedWordPress->auto_update('') #7 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #8 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #9 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-settings.php(579): do_action('wp_loaded') #10 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-config.php(102): require_once('/data01/virt287...') #11 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-load.php(37): require_once('/data01/virt287...') #12 /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-login.php(12): require('/data01/virt287...') #13 {main} thrown in /data01/virt28780/domeenid/www.eata.ee/htdocs/newsite/wp-includes/SimplePie/Registry.php on line 214