No matter what you do you can't get Drupal to upgrade from 8.2.x to 8.3+? I was in the same situation while using Drush to update this site. Inside is a quick guide to fix the problem!
Did you delete a module without going through the "proper" way of uninstalling it, and now have a broken Drupal site a.k.a. WSOD? Check out this post for more info on a resolution.
I should be getting some rest, but after sleeping all day and resting from having the stomach flu...I need something to keep me busy.