Micheal Gierza on "Wordpress Social Log in Not Working On My Website"

Warning: curl_setopt() [ function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated when safe_mode is enabled or an open_basedir is set in / home/u935215605/public_html/wp-content/plugins/
addthis-social-sign-in/includes/openid.php on line 138 Warning: curl_setopt() [ function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated when safe_mode is enabled or an open_basedir is set in / home/u935215605/public_html/wp-content/plugins/
addthis-social-sign-in/includes/openid.php on line 138 Warning: curl_setopt() [ function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated when safe_mode is enabled or an open_basedir is set in / home/u935215605/public_html/wp-content/plugins/
addthis-social-sign-in/includes/openid.php on line 138 Warning: Cannot modify header information - headers already sent by (output started at /home/u935215605/
public_html/wp-content/plugins/addthis-social-sign-in/ includes/openid.php:138) in /home/u935215605/ public_html/wp-content/plugins/addthis-social-sign-
in/addthis_social_sign_in.php on line 173

That error appeared on addthis :-C