Upgrading Drupal

I am using CKEditor 5, but I have the following issue that I haven't been able to resolve.The issue is that the <style> tags are removed when the content is loaded into the editor. I understand this is due to security reasons.

I contacted the CKEditor developers to ask about how to use the <style> tag.
They provided me with an answer here.

Hello, Drupal Community!

I recently updated my Drupal installation to version 10.3.9, and I'm encountering issues with the DXPR Theme. Here’s a summary of what I’ve done and the problems I’m facing:

1. After the update, the site started displaying errors like:

   Drupal\Core\Extension\Exception\UnknownExtensionException: The theme does not exist in Drupal\Core\Extension\ExtensionList->getPathname().

My site is currently running 10.3.2, and I'm trying to upgrade to 10.3.8 using this as noted on the Release Notes page:

composer update "drupal/core-*" --with-all-dependencies

But after running, instead of an update I get: "Nothing to install, update or remove".

My goal is to move up to v11, but my understanding is I need to first bring the site up to the latest v10. So any guidance on either fixing this one v10 update or moving straight to v11 would be much appreciated.

On one of my sites, when I run drush updb, I get:

 [error]  Geolocation - Google Maps API requires this module and version. Currently
using jQuery UI Menu version
 (Currently using Unresolved dependency  [error]  Geolocation - Google Maps API requires this module and version. Currently
using jQuery UI Menu version
 (Currently using Unresolved dependency jQuery UI Menu (Version >=2.1 required) )

But jQuery UI Menu IS version 2.1.

But, its version is not known to drush:

# composer require 'drupal/upgrade_status:^4.3'
./composer.json has been updated
Running composer update drupal/upgrade_status
Loading composer repositories with package information
Updating dependencies                                 
Nothing to modify in lock file
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 5 installs, 0 updates, 0 removals
  - Syncing phpstan/phpstan (1.12.8) into cache
^C

It never gets past this step. What do I do? Drupal 10.3.7

EDIT

Solved with Drupal 10.3.8

Hi 

I upgraded fromDrupal 10.3.6 to Drupal 10.3.7. All modules are up to date. Caches cleared.

The install went ok and the site works and looks ok.

When I go to edit a page I have the 500 Internal Server Error in Chrome or Firefox, 

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.