Update.php: Page not found Currently using D7 (specifically the Commerce Kickstart installation profile). When trying to reach update.php, I get a "Page Not Found" error. I also noticed that the url Drupal is trying to reach is /core/update.php.

Has anyone else encountered this?
Do you have the .htaccess file from 8.x instead of the one from 7.x?
The directory structure of Drupal core changed from 7.x to 8.x, and 8.x includes additional mod_rewrite rules to redirect to the changed locations of update.php and install.php