Software update: Drupal 8.6.12

Version 8.6.11 of Drupal has been released and due to a problem therein a successor was immediately released. Drupal is a PHP-written, user-friendly and powerful content management platform, with which, for example, websites can be created. It’s simple enough for a novice user, but powerful enough to build a more complex website as well. The program includes a content management platform and a development framework. The release notes for this release can be found below.

release notes
The third-party Twig library, which powers Drupal 8’s theme system, recently released new versions (Twig 1.38.0 and 1.38.1) that introduced a fatal error for Drupal 8 sites using Composer. Drupal 8.6.11 was released yesterday with an update to Twig 1.38.2 in order to resolve that error. However, this update also led to a different regression for certain Drupal 8 themes that use Twig {% embed %} tags. This release hotfixes Drupal 8 to resolve that regression. No other changes are included.

Known issues

• #3026560: After upgrade to 7.63, 8.6.7, or 8.5.10 still get TYPO3 phar error for drush
• #3026443: \Drupal\Core\Security\PharExtensionInterceptor is incompatible with GeoIP and other libraries that use phar aliases or Phar::mapPhar()
• #3031128: Update from 8.6.7 to 8.6.8 warnings – Drupal\Core\Extension\Extension has no unserializer