Errors importing blogroll

Any idea what this means??
Warning: file(): URL file-access is disabled in the server configuration in /home/[xxx].net/httpdocs/blog/wp-admin/link-import.php on line 116
Warning: file(https://rpc.blogrolling.com/opml.php?r=%5Bxxx%5D): failed to open stream: no suitable wrapper could be found in /home/[xxx].net/httpdocs/blog/wp-admin/link-import.php on line 116
Warning: implode(): Bad arguments. in /home/[xxx].net/httpdocs/blog/wp-admin/link-import.php on line 116
XML error: no element found at line 1
The [xxx] is because I am paranoid. ??