Settings / General / Site Language Option

I put my question also on stackoverflow.

While I try to change WordPress language on localhost Mac OS machine, I got this Warning message and I couldn’t find Site Language option on General Settings page.

–MSG-
Warning: An unexpected error occurred. Something may be wrong with ww.wp.xz.cn or this server’s configuration. If you continue to have problems, please try the support forums. (WordPress could not establish a secure connection to ww.wp.xz.cn. Please contact your server administrator.) in /opt/lampp/htdocs/wordpress/wp-admin/includes/translation-install.php on line 65
——

Curl is enabled successfully in web server.

I also checked the privilege of ../wordpress/wp-content/languages/ directory and chmod to 777

Any help, please?

Thanks,
Shamy