Installing Drupal

Hello I'm new to Drupal, using Drupal 9 and composer version 2.3.10. When I try to install a theme by entering

composer require 'drupal/at_theme:^1.4'

into the command prompt I get this error:

In VersionParser.php line 521:

  Could not parse version constraint 1.4': Invalid version string "1.4'"

trying to update my local test servers from 9.3.15 to 9.4.2 before I update production servers. major headache!

I am on macOS , so I installed php 8.1 since php 7.3 is not compatible with D9.4. then php required apache updated because built-in apache would not work. got it configured.  and update is having serious issues.

I decided to try a new install of 9.4.2. this is the error after clicking save and cont on lang and save and cont on choose profile standard, verify req shows below with no button to continue. how to I fix these errors?

I have installed Drupal 9 on two websites with two different themes.  One website is going to be an ecommerce site and the other one is more of a general blogging site.  After installing Drupal and loading the theme that is specified for the purpose of the website, the home page suggests to read the User's Guide.  But it is the general User's Guide of drupal.  I suppose that is OK but I need to know specifically what section of the User's Guide I need to focus on.

I have Windows 11 with WSL2 and I wish to run Drupal on it.

How to install Drupal 9 with a local Drush on WSL2 without Docker and then access it from a web browser in the same Windows 11 environment via localhost?

If this isn't possible, what is the most similar which I can do?

I have a working (but empty) D9 installation, and am trying to use migrate-upgrade to pull over previous content.

I am using

drush migrate-upgrade --legacy-db-url=mysql://<user>:<pw>@localhost/<db> --legacy-root=/Home/Documents/filestore

This results in an error from Logger.php line 161:
                                      
  The log level "ok" does not exist.

I have recently upgraded my website modules and core on Localhost from Drupal 8.75 to 9.2, it is working on Localhost fine with PHP 7.4.

I have tried to transfer it across to a remote server for hosting, but find it just gives a white error screen...

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "media_type" entity type does not exist. in Drupal\Core\Entity\EntityTypeManager->getDefinition() (line 139 of core/lib/Drupal/Core/Entity/EntityTypeManager.php).