[MM3-users] Failed first login

Hi everyone, i installed mailman3-full on debian 10. During installation, it asks me to enter the admin user credentials. After configuration, I restart mailman3 and mailman3-web. When I try to log in for the first time by entering the admin credentials, a message warns me that the credentials are incorrect. I looked at the mailman logs, but I find nothing. It seems that it is a django authentication problem, because even in the django admin panel I can't log in. Looking at the mailman3web db, in the auth_user table, I see the admin user. How can I see why it does not accept the credentials? Thank you in advance