Converting .htaccess to nginx (mod_rewrite)
Everything is inside. No more .htaccess, no more complex rules use try_files.
EDIT: And if it is not obvious, do not trust online converters.
$ sudo vim /etc/nginx/sites-available/default
location / { try_files $uri $uri/ =404; }
to
location / { try_files $uri $uri/ /index.php?$args;}