Configuration problem: request default 15.15.15.15/ not working

[Frank_Mascarell]

I'm testing Nginx with a django application, the requests
https://15.15.15.15/admin/ and https://15.15.15.15/inicio/ work correctly,
but https://15.15.15.15/ throw error "Not found: The requested URL / was not
found on this server. ", And I can not find the error. This is the
configuration:

server{
       #Configuracion SSL

    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name 15.15.15.15;
    include snippets/self-signed.conf;
    include snippets/ssl-params.conf;
    
    #root /home/gela/LibrosWeb;
    
    location = /favicon.ico { access_log off; log_not_found off; }
    location  /robots.txt { alias /var/www/LibrosWeb/robots.txt ;}
    
    location / {
        include proxy_params;
        proxy_pass http://unix:/run/gunicorn.sock;
    }
    
    location /static {
        alias /home/gela/LibrosWeb/static;
    }
}
    
server{
    #Configuracion http
    
    listen 80;
    listen [::]:80;
    server_name 15.15.15.15;
    return 301 https://$server_name$request_uri;
}

and urls.py django:

urlpatterns = [
    path('', RedirectView.as_view(url='/inicio/', permanent=True)),
    path('inicio/', include('inicio.urls')),
    path('admin/', admin.site.urls),
]

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,281393,281393#msg-281393