Upgrading Drupal

Unable to update from 9.4.8 to 9.4.9.

The /core/modules/media_library/ module is present. 

The link to the patch is well resolved.

drupal admin suggested php upgrade, so I did. 7.4>8 and now its throwing this error at me (going back to7.4 tells me php version is too low).. can you please give a hit what to do ?

Additional uncaught exception thrown while handling exception.

Original

ReflectionException: Class "Drupal\Core\EventSubscriber\ExceptionTestSiteSubscriber" does not exist in ReflectionClass->__construct() (line 30 of /home/sailbudd/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterEventSubscribersPass.php).

H everybody

Drush does not work after upgrading from 8 to 9.4.8

C:\wamp64\www\lonab1>drush

Fatal error: Uncaught Error: Class 'Drush\Config\Environment' not found in C:\wamp64\www\lonab1\vendor\drush\drush\drush.php:67
Stack trace:
#0 C:\wamp64\www\lonab1\vendor\drush\drush\drush(4): require()
#1 {main}
  thrown in C:\wamp64\www\lonab1\vendor\drush\drush\drush.php on line 67

C:\wamp64\www\lonab1>

Good day

I've migrated my D8 website to D9. Now front end users can't log in anymore. When you try you only stay on the home page.

If you try to log in as an admin it takes you to the admin/content page but gives an error that you're not authorized to access this content.  I checked all the permissions etc. and all seems to fine.

What am I missing here?

Hello,

I successfully upgraded our website from Drupal 8 to Drupal 9.4.8 using Composer.
The site is displaying correctly. However, when I ma trying to access some of the Admin menus, or try to add content through the admin menu, I get the following error:

Since long, I have been able to follow Drupal's upgrades, but I got stuck 2 years now when attempting to upgrade 8 to 9 in my test environment.