Installing Drupal

Hello together

I am currently trying to get Drush working on my localhost and set an alias to my local site.
This is proving to be quite challenging for some reason
I have installed my site using composer. I have downloaded the drush-master zip via git.
I did try and run composer global require drush which appeared to work (installed drush in a composer folder in user/appdata/roaming/composer/vendor/drush/drush) It still didnt work so I added the path as a PATH environment variable.
in Git I get this message

Hi there,

I am new to Drupal, but upon installation I ran into the following:

An AJAX HTTP error occurred.
HTTP Result Code: 200
Debugging information follows.
Path: /drupal-8.3.5/core/install.php?rewrite=ok&langcode=en&profile=standard&continue=1&id=1&op=do_nojs&op=do
StatusText: OK
ResponseText:
Fatal error: Call to a member function setFormClass() on null in /home/dh_db2igg/mahdial-husseini.com/drupal-8.3.5/core/modules/field_ui/field_ui.module on line 74

Hi :)

I am a new user attempting installing of Drupal 8.3.5 on Ubuntu 17.04. I want to install on a local machine. I have followed the instructions here:
https://www.howtoforge.com/tutorial/how-to-install-drupal-with-nginx-and...

The only problem I have encountered was in the installation of drush, for which I went off script and installed it via Composer. I then reached the end of the installation guide.

Good morning,

How come there is no native support for MSSQL? This is a very popular database that can do way more than MySQL or any of the other free ones. Even the free version of the MSSQL is better than MySQL will ever be.

So why no native support for this. If I understand how drupal does everything it use a database layer to talk to the databases. So I'm failing to see why you can not create and support native MSSQL connection. Microsoft is create and updating the drive for PHP. This give you a drive stair from the source.

Today I tried to upload my proyect to a host (x10hosting) and it worked, but links in the main menu doesn't work properly. When I click one, no open the page and in the bottom of my site appear this error:

Notice: Undefined variable: app_root in include_once() (line 680 of /home/iecupx10/public_html/sites/default/settings.php).
Notice: Undefined variable: site_path in include_once() (line 680 of /home/iecupx10/public_html/sites/default/settings.php).

Anyone can help me? Thanks in advance.