cURL error 6 on news area, and also won’t auto update

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I had the same problem and eventually found a solution today (actually, a friend of mine did it). What I did was to edit the /etc/nginx/nginx.conf file and add resolver ip address. The configuration file in the section server contains now resolver 127.0.0.1; below you can find a part of it

server {
    listen       443 ssl;
    resolver        127.0.0.1;

Do not forget to restart nginx and php-fpm services, that depends on your distro, with archlinux you can do the following

systemctl stop php-fpm
systemctl stop nginx
systemctl start php-fpm
systemctl start nginx

Hope that helped.