==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.3.2
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version: CentOS 7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB/MySQL (installed by iRedMail)
- Web server (Apache or Nginx): MariaDB/MySQL (installed by iRedMail)
- Manage mail accounts with iRedAdmin-Pro?: No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

[root@mail ~]# service iredadmin status
Redirecting to /bin/systemctl status iredadmin.service
● iredadmin.service - iRedAdmin daemon service
   Loaded: loaded (/usr/lib/systemd/system/iredadmin.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 三 2020-10-28 23:46:17 CST; 11min ago
  Process: 13646 ExecStopPost=/usr/bin/rm -rf /var/run/iredadmin (code=exited, status=0/SUCCESS)
  Process: 13643 ExecStart=/usr/sbin/uwsgi --ini /opt/www/iredadmin/rc_scripts/uwsgi/rhel.ini --pidfile /var/run/iredadmin/iredadmin.pid (code=exited, status=1/FAILURE)
  Process: 13640 ExecStartPre=/usr/bin/chmod 0755 /var/run/iredadmin (code=exited, status=0/SUCCESS)
  Process: 13637 ExecStartPre=/usr/bin/chown iredadmin:iredadmin /var/run/iredadmin (code=exited, status=0/SUCCESS)
  Process: 13635 ExecStartPre=/usr/bin/mkdir /var/run/iredadmin (code=exited, status=0/SUCCESS)
Main PID: 13643 (code=exited, status=1/FAILURE)

10月 28 23:46:17 mail.* systemd[1]: Starting iRedAdmin daemon service...
10月 28 23:46:17 mail.* systemd[1]: Started iRedAdmin daemon service.
10月 28 23:46:17 mail.* uwsgi[13643]: realpath() of /opt/www/iredadmin/rc_scripts/uwsgi/rhel.ini failed: No such file or directory [core/utils.c line 3654]
10月 28 23:46:17 mail.* systemd[1]: iredadmin.service: main process exited, code=exited, status=1/FAILURE
10月 28 23:46:17 mail.* systemd[1]: Unit iredadmin.service entered failed state.
10月 28 23:46:17 mail.* systemd[1]: iredadmin.service failed.

Please assist troubleshooting. Here is the NGINX error log:
2020/10/28 23:35:03 [error] 12079#0: *375 connect() failed (111: Connection refused) while connecting to upstream, client: *, server: _, request: "GET /iredadmin HTTP/2.0", upstream: "uwsgi://127.0.0.1:7791", host: "mail.*"
2020/10/28 23:35:04 [error] 12079#0: *375 connect() failed (111: Connection refused) while connecting to upstream, client: *, server: _, request: "GET /iredadmin HTTP/2.0", upstream: "uwsgi://127.0.0.1:7791", host: "mail.*"
2020/10/28 23:35:04 [error] 12079#0: *375 connect() failed (111: Connection refused) while connecting to upstream, client: *, server: _, request: "GET /iredadmin HTTP/2.0", upstream: "uwsgi://127.0.0.1:7791", host: "mail.*"
2020/10/28 23:35:04 [error] 12079#0: *375 connect() failed (111: Connection refused) while connecting to upstream, client: *, server: _, request: "GET /iredadmin HTTP/2.0", upstream: "uwsgi://127.0.0.1:7791", host: "mail.*"
2020/10/28 23:35:04 [error] 12079#0: *375 connect() failed (111: Connection refused) while connecting to upstream, client: *, server: _, request: "GET /iredadmin HTTP/2.0", upstream: "uwsgi://127.0.0.1:7791", host: "mail.*"
2020/10/28 23:35:04 [error] 12079#0: *375 connect() failed (111: Connection refused) while connecting to upstream, client: *, server: _, request: "GET /iredadmin HTTP/2.0", upstream: "uwsgi://127.0.0.1:7791", host: "mail.*"