Hello dear,
Since I upgrade iRedAdmin to 1.6 I cannot access to administgration.
The page display : Internal Server Error
My python 3 is ok
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/opt/www/iredadmin/rc_scripts/uwsgi/debian.ini
[uwsgi]
plugins = python3,syslog
master = true
vhost = true
enable-threads = true
processes = 5
logger = syslog:iredadmin,local5
log-format = [%(addr)] %(method) %(uri) %(status) %(size) "%(referer)"

uwsgi-socket = 127.0.0.1:7791

uid = iredadmin
gid = iredadmin

chdir = /opt/www/iredadmin
wsgi-file = iredadmin.py
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python3 /opt/www/iredadmin/iredadmin.py
return :
http://0.0.0.0:8080/
Traceback (most recent call last):
  File "/opt/www/iredadmin/iredadmin.py", line 16, in <module>
    app.run()
  File "/usr/local/lib/python3.8/dist-packages/web/application.py", line 360, in run
    return wsgi.runwsgi(self.wsgifunc(*middleware))
  File "/usr/local/lib/python3.8/dist-packages/web/wsgi.py", line 66, in runwsgi
    return httpserver.runsimple(func, server_addr)
  File "/usr/local/lib/python3.8/dist-packages/web/httpserver.py", line 176, in runsimple
    server.start()
  File "/usr/local/lib/python3.8/dist-packages/cheroot/server.py", line 1836, in start
    self.prepare()
  File "/usr/local/lib/python3.8/dist-packages/cheroot/server.py", line 1791, in prepare
    raise socket.error(msg)
OSError: No socket could be created -- (('0.0.0.0', 8080): [Errno 98] Address already in use)
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==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.5.1 MARIADB edition
- Deployed with iRedMail Easy or the downloadable installer? downloadable
- Linux/BSD distribution name and version: Ubuntu 20
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):MySQL
- 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.
====

Thanks for help