==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): iRedAdmin-Pro-SQL-4.6
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer (actually, installed by you)
- Linux/BSD distribution name and version: Ubuntu 18 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? Yes
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
I cannot open iRedAdmin page, error 404 occurs, Nginx is up and running, email is working fine. I just can't access iRedAdmin.

Please send a link so I can try to upgrade. Hopefully, that solved the problem.

Thanks,
Alex