Installing Drupal

My site is hosted on Hostgator.

They are planning to upgrade php version from current version 5.6 to 7.2+.

When i manually tried upgrading the php version to 7.4 using cpanel from multi php version, drupal stopped. I got following error message.

I trying istall drupal 9 on local server (xampp) , I face problem it appears on below:

1- PHP extension 

2- database support 

how can solve this problems 

I have been trying to move a drupal site (7.5.9) from an Ubuntu 14 sharedserver (Virtualmin) to an Ubuntu 18 vps server (Virtualmin). I have tried to use a full backup of the virtual server and restore it on the new server, but then I get:

The website encountered an unexpected error - and when I look in the watchdog table I see this error:

How we create a Hotel Booking website in Drupal?

Newbie here!! 

Installed drupal 8.9.3 for my latest project. 

Below is the issue I am facing

Created  the contact us page and am working on 'send email' functionality in drupal but encountered server issues and need your helpI have added 'Mail System' and 'SMTP Authentication Support' modules to support email functionality. 

WAMP and Drupal PHP versions are different. Drupal is using php 5.6 and that's the reason the composer is unable to install PhpMailer Library files.

Is it a normal scenario for Drupal projects? 

I just created a new site and I cannot apply the patches with Composer in Drupal 8.9

Here is my composer.json file :