Warning: fopen() [function.fopen]: php_network_getaddresses: getaddrinfo failed: Name or service not known in /index.php on line 1224

Warning: fopen(http://www.otopr.pl/rss/20/oprogramowanie-rss.xml) [function.fopen]: failed to open stream: php_network_getaddresses: getaddrinfo failed: Name or service not known in /index.php on line 1224
Error reading RSS data.