Installing Drupal

I was trying to install drupal 8 in MAMP with PHP 7.3.Unfortunately it leads to an error page as given. Can anyone help me out to install it properly?
 

Hello,

Im installing drupal 8.6.10 on my localhost Xampp server... But getting error once done with all set ups..

Getting  " Page Not found error "

When performing a clean install of Drupal 8.7.2, I am getting an error on the Database Setup page related to failing to connect to my database.  This is when using the default settings. 

To resolve the issue, I must go to 'Advanced Options' and change the 'Host'
from: localhost
to:  127.0.0.1

I remember at some point this changed (maybe with PHP 5-7?) and I'm not sure why.

Hopefully this is helpful for anyone else having issues with the default settings.

I am new to Drupal 8 and am starting by building a sample site.  I have everything setup right, but I'm getting the PDO connection error below.  I'm pretty sure it has to do with hostname but I can't figure out what.

My settings.php looks like this:

I am new to Drupal 8 and am starting by building a sample site.  I have everything setup right, but I'm getting the PDO connection error below.  I'm pretty sure it has to do with hostname but I can't figure out what.

My settings.php looks like this:

I've installed drupal-8.7.2 & php 7.3.6 (Thread Safe).

In php.ini, I uncommented this line:

extension=pdo_sqlite

When I run this from the command prompt

php core/scripts/drupal quick-start demo_umami

I get this error: