The common Database error 1146

Hello,
just istalled for the first time the version 3.6.6 on Ubuntu 20.4 with nginx, where the rest of the site run.
Followed the installation instructions uploading the entire /lists folder on the site root, and added the database details to the file config.php.
When I browse to https://mysite.com/lists I get these errors:

Database error 1146 while doing query Table ‘phplist_db.phplist_subscribepage’ doesn’t exist
Database error 1146 while doing query Table ‘phplist_db.phplist_subscribepage’ doesn’t exist
Database error 1146 while doing query Table ‘phplist_db.phplist_subscribepage’ doesn’t exist

If I browse to https://mysite.com/lists/admin I get “502 Bad Gateway” from Nginx.

This is the first installation. No cache. No previous sessions on the browser.

What can I do?