==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.5.1
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer
- Linux/BSD distribution name and version: Ubuntu 20.04 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro?  no
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello, please help. When I come in https://mydomain/iredadmin error page "Internal Server Error"

my log file (var/log/syslog) and my status iredadmin (attached images)

curl -k https://localhost:8080
curl: (7) Failed to connect to localhost port 8080: Connection refused

pip3 install web.py
Requirement already satisfied: web.py in /usr/local/lib/python3.8/dist-packages (0.62)
Requirement already satisfied: cheroot in /usr/local/lib/python3.8/dist-packages (from web.py) (8.6.0)
Requirement already satisfied: more-itertools>=2.6; python_version >= "3.6" in /usr/lib/python3/dist-packages (from cheroot->web.py) (4.2.0)
Requirement already satisfied: six>=1.11.0 in /usr/lib/python3/dist-packages (from cheroot->web.py) (1.14.0)
Requirement already satisfied: jaraco.functools in /usr/local/lib/python3.8/dist-packages (from cheroot->web.py) (3.5.0)