WordPress 502 Bad Gateway after login

I get error WordPress 502 Bad Gateway after login to WordPress site.

I quickly found an error message in error log of webserver.

/var/log/nginx/error.log says

FastCGI sent in stderr: "PHP message: Chyba databáze WordPressu: Table 'database.wp_wfLiveTrafficHuman' doesn't exist.

But what does that error mean?

I have tried to find something via Google search but nothing useful. Therefore navigated into  a folder containing plugins and tried to remove plugins. Let’s ignore add-ons like gutenberg or cloudflare…

Error says that something looks for table wp_wfLiveTrafficHuman. Let’s guess which add-on could track traffic – Wordfence?

Bingo!

After removing Wordfence plugin I can log in WordPress site again 🙂

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