aramkiss on "Fatal error: Maximum execution time of 30 seconds exceeded in C:xampphtdocsms"

Dea Support Team,
Please help??
Plugin// Add New//
Message error
Fatal error: Maximum execution time of 30 seconds exceeded in C:xampphtdocsmsscwp-includesclass-http.php on line 1526
------------------------------------------------------------------

[Large code excerpt removed by moderator per forum rules. Please use Pastebin or a Gist for all large code excerpts, they work better anyway.]

$theHeaders = WP_Http::processHeaders( $this->headers, $url );