Greetings, I think my days of suffering are over. After reading hundreds of logs, I found the problem. An update of Whitenoise to 4.0 where you must change the shape of the configuration, caused that with my old configuration the gunicorn service will throw errors. The rest is all right.

http://whitenoise.evans.io/en/stable/django.html#django-middleware

Francis Daly thanks for the help.
Good day.