Update ownCloud with Updater app don't works about updater HOT 3 OPEN

See owncloud/core#41145

This specific case looks more like a web server misconfiguration, the "Client error response" to "/owncloud/index.php/occ/config:list" from the screenshot (usually it's better to not use screenshots for error message so that other user can find them but also can copy them for further search) with a 404 status (Not Found) shows that the web server seems to not provide ownCloud on the "localhost" domain which looks like that is mandatory.

My best bet would be that you need to fix the web server config (this doesn't look like a ownCloud specific thing) with the help of the support community of the web server in use. :-)

from updater.

From where does this localhost https://localhost/owncloud/index.php/occ/config:list comes from ? This is the main question !

I use ownClud in a sub directory of my apache.
Obsolete, but this is my apache config

<VirtualHost *:80>
        ServerName www.mxxxxx.info
        DocumentRoot /srv/www/vhosts/mxxxxx
        ErrorLog /var/log/apache2/mxxxxx.error.log
        CustomLog /var/log/apache2/mxxxxx.access.log combined
        RewriteEngine on
        RewriteRule     ^/wordpress(.*)$ https://%{SERVER_NAME}/wordpress$1 [L,R]
        LogLevel alert rewrite:trace3

        <Directory /srv/www/vhosts/mxxxxx>
                DirectoryIndex index.php index.html
                Options Indexes SymLinksIfOwnerMatch
                Require all granted
                AllowOverride All
        </Directory>
RewriteCond %{SERVER_NAME} =www.mxxxxx.info
RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>

from updater.