Installing Drupal

I've been trying to install 9.2.2 without luck. Each time I try to begin an install, I get this error: 

"Parse error: syntax error, unexpected ':', expecting '{'  on my/site/domain/ in vendor/symfony/polyfill-php80/bootstrap.php on line 23.

I get the same error whether I install the archive via CPanel, a direct download from drupal.org or through composer. Any clues to the answer?

Hi!

I'm using drupal 9. Working on xampp(localhost) server. I have imported database and and copied the project in xampp folder. When I run the project, Home page works fine but If I click on any other pages(like about-us), the site redirects to old site. 

I tried searching for $base_url in settings.php. But I didn't find the line. I'm new to drupal. Kindly help me.

How to deploy Drupal on windows server 2019?

Hello and thank you in advance !

I am new to Drupal and I am having some issues installing Drupal with composer for some reason once I type  "composer create-project drupal/recommended-project folder" in the folder I want to create my new project it just stays there without any further progress or response from the terminal just "Creating a "drupal/recommended-project" project at "./folder" " I don't know what is happening...

I have been a long term user of Drupal 7.

I have installed two new Raid drives in my Webserver: no going back!

Also I have completed installing Ubuntu Server 20.04, Apache, MySQL, and PHP. I removed cloud-init and open-iscsi which improved my  boot up time.

In configuring Apache I completed:

nano /etc/apache2/sites-available/rescuerobot.org.conf

I am using group module to set up a membership site which will access by different departments. The site works as expected that each department only can post/view own articles. but the  search cannot be integrated with group but returns  all related nodes were created by  all groups.  May anyone expertise help an idea?  very appreciated!  Thanks!