안녕하세요
유튜브 동영상 RSS 게시판을 설치하고 RSS불러오기 클릭하니
이런 에러가 뜹니다
Warning: fsockopen() [function.fsockopen]: php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/robotplay/public_html/skin/board/tto_youtube.rss_euc/tto_youtube_update.php on line 140

Warning: fsockopen() [function.fsockopen]: unable to connect to qdate.youtube.com:80 (php_network_getaddresses: getaddrinfo failed: Name or service not known) in /home/robotplay/public_html/skin/board/tto_youtube.rss_euc/tto_youtube_update.php on line 140
php_network_getaddresses: getaddrinfo failed: Name or service not known (0)

Fatal error: Call to a member function children() on a non-object in /home/robotplay/public_html/skin/board/tto_youtube.rss_euc/tto_youtube_update.php on line 25

초보입니다 무슨 에러인지 가려쳐 주셨으면합니다
25번라인은 $counts = $sxml->children('http://a9.com/-/spec/opensearchrss/1.0/'); // opensearch: 이름 공간으로 요약 횟수 얻기 이렇게 쓰여있고요
140번라인은
$fp = fsockopen($host, $port, $errno, $errstr, 30); 이렇게 쓰여있습니다

부탁합니다