I have my own remote server to play around. I gave Drupal 8 a go but decided today to delete it from my server and install Drupal 7.56 again.

So I deleted all files via FTP and deleted all tables in phpMyAdmin, uploaded the Drupal 7.56 files from a fresh package I downloaded from drupal.org but ran into this issue:

When running through the process of install.php I suddenly get these 2 error:

Notice: Undefined variable: app_root in include_once() (line 690 of /var/www/clients/client1/web3/web/sites/default/settings.php). Notice: Undefined variable: site_path in include_once() (line 690 of /var/www/clients/client1/web3/web/sites/default/settings.php). 

So, after some Googling I found out it might have to do with the setting.php file of Drupal 8. The thing I don’t understand is how this fresh install can search for the settings.php file of the Drupal 8 installation whilst I deleted every single file and table?

I checked my settings.php file of the Drupal 7 installation and there are only 648 lines, so I have no idea where to go searching…