Due to some conflicting installations of third-parties software in my Ubuntu 18.04.01 Server Edition I needed to wipe everything out and reinstall Ubuntu again (no network connection anymore).
I kept a copy of /etc/ssl/certs folder and /etc/letsenctypt folder , and o /etc/nginx/conf.d/default.conf file and then copied everything into the freshly installed Ubuntu 18.04.01 Server system.
I just restored the nginx server and when checked in https://check-your-website.server-daten.de/?q=ggc.world
I got Content problems - mixed content, missing files etc.
What does it mean? I guess there is something missing in the nginx configuration, because the content of the website didn’t change since last time it was functioning.
What should I check and verify?
Marco