[MM3-users] 404 on fresh install (Debian11)

Hello, very new to mailman3, I used to manage mailman2 on a Debian 10 server. The server has been upgraded to Debian 11 and mailman2 disappear…

I try fresh install of mailman3, prerequisite to data migration, but without success. If some can help, I would be really greatful.

Here is my path:

• mailman3-full install with apt. MySQL config since I have this DBMS
• python3-pymysql install with apt after seeing errors in logs
• Apache2 configuration (other virtual hosts are present)

<VirtualHost *:80>
    ServerName newsletter.mydomain.tld

    Alias /static      /var/lib/mailman3/web/static
    Alias /favicon.ico /var/lib/mailman3/web/static/postorius/img/favicon.ico

    DocumentRoot /var/lib/mailman3/web/static
    <Directory "/var/lib/mailman3/web/static">
        Require all granted
    </Directory>

    ProxyPassMatch ^/static !
    ProxyPass / http://localhost:8001/
    ProxyPassReverse / http://localhost:8001/

    ErrorLog ${APACHE_LOG_DIR}/newsletter_error.log
    CustomLog ${APACHE_LOG_DIR}/newsletter_access.log combined
</VirtualHost>

And now I have a 404 answer when consulting my http page.

When trying to access /static sub-path, I get Cannot serve directory /var/lib/mailman3/web/static/admin/: No matching DirectoryIndex found.

I also tried ProxyPass / unix:/run/mailman3-web/uwsgi.sock|uwsgi://localhost but also fails with No protocol handler was valid for the URL / (scheme 'uwsgi')

I am a bit lost with that.

Thanks for your help