I’m seeing a database error in the NGINX logs when performing a clean install of latest WordPress 5.6 on Ubuntu 20.04 with NGINX and PHP7.4:

Unknown column ‘wp_’ in ‘field list’ for query SELECT wp_

This is the full error from the NGINX log:

2020/12/30 10:37:05 [error] 38795#38795: *846 FastCGI sent in stderr: "PHP message: WordPress database error Unknown column 'wp_' in 'field list' for query SELECT wp_" while reading response header from upstream, client: 162.158.0.0, server: domain.com, request: "POST /wp-admin/setup-config.php?step=2 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php/php7.4-fpm.sock:", host: "domain.com", referrer: "https://domain.com/"

The error doesn’t appear to be fatal because I can successfully complete the setup wizard, login to WordPress and see all the default content.

However any SQL error in the log worries me, particularly with a new installation, so ideally I’d like to resolve the underlying issue in case there is something broken that I’m not aware of.

Steps to reproduce:

1. Clean install of latest WordPress on Ubuntu 20.04 with NGINX and PHP7.4
2. Open new installation setup page in browser
3. Enter database details with default "localhost" for host and "wp_" as table prefix
4. Click "Submit" and see the confirmation "All right, sparky! You’ve made it through this part of the installation. WordPress can now communicate with your database." message displayed
5. View the NGINX error log to observe the SQL error reported above

Thanks in advance for any help!