warning issue

Hello,
i moved my wp site to new server and for sure i changed domain dns , now i get warning message :

Warning: file_get_contents() [function.file-get-contents]: php_network_getaddresses: getaddrinfo failed: Name or service not known in /disk2/tooga1/public_html/wp-content/plugins/chopslider/chopslider.php on line 192

Warning: file_get_contents(https://www.iraqcyber.com/wp-content/plugins/chopslider/scripts/chopslider-1.php) [function.file-get-contents]: failed to open stream: php_network_getaddresses: getaddrinfo failed: Name or service not known in /disk2/tooga1/public_html/wp-content/plugins/chopslider/chopslider.php on line 192

any kindly advice please ?

Thanks