Error thrown

Call to undefined function curl_init()

PHP Warning: Parameter 1 to wp_default_styles() expected to be a reference, value given in C:\inetpub\wwwroot\htdocs\babrone\blog\wp-includes\plugin.php on line 600 PHP Warning: Parameter 1 to wp_default_scripts() expected to be a reference, value given in C:\inetpub\wwwroot\htdocs\babrone\blog\wp-includes\plugin.php on line 600 PHP Warning: Parameter 2 to M_DataMapper::set_custom_wp_query_where() expected to be a reference, value given in C:\inetpub\wwwroot\htdocs\babrone\blog\wp-includes\plugin.php on line 291 PHP Warning: Parameter 2 to M_DataMapper::set_custom_wp_query_groupby() expected to be a reference, value given in C:\inetpub\wwwroot\htdocs\babrone\blog\wp-includes\plugin.php on line 291 PHP Warning: Parameter 2 to M_DataMapper::set_custom_wp_query_fields() expected to be a reference, value given in C:\inetpub\wwwroot\htdocs\babrone\blog\wp-includes\plugin.php on line 291 PHP Warning: Parameter 2 to M_DataMapper::set_custom_wp_query() expected to be a reference, value given in C:\inetpub\wwwroot\htdocs\babrone\blog\wp-includes\plugin.php on line 291