Hi PedroN,
what a pitty, that you didn't read the whole article. You would have noticed, that this KB - article is was well written for people with the issue:
The resolution in the KB - article helps to solve misconfigurations and may solve you a lot of time to investigate the root cause of your current issue. If you still don't want to follow the resolution, pls. provide complete error - logs ( nginx and php ) and traces, so that further investigations can be done by people willing to help you.