Why The changes of my development server, are not reflected in the production server (views and urls)??

Hi, I am writing to see if you can help me with this: I happen is that I make changes in the development server and they work me well, but when I want to see them in production, I do not recognize them and I throw the error:

Page not found (404) Request Method: GET Request URL: http://www.maxsistemas.cl/casas/mipagina

I have tried all sorts of views, and called in urls, (all of them work in development, but nothing works for me in production) last clone a class definition that makes the same call and uses the same template but only change the name of the Definition to see if it works, and it happens to me the same everything works well in development, but when I want to see it in production, I throw the error mentioned at the beginning (404).

I have also tried, reloading nginx with several commands for me to take the changes, but the negative result even, these are the commands I tried:

Sudo systemctl daemon-reload Sudo systemctl start gunicorn Sudo systemctl restart nginx Sudo systemctl start nginx Sudo ufw allow ‘Nginx Full’

Thank you for the help, I do not know what else to try.