From Request to Response: A Journey into Drupal 8 Internals — SitePoint
Drupal\Core\Controller\TitleResolver::getTitle() can result in PHP 8.1 deprecation notices due to NULL being allowed by hasDefault [#3356621] | Drupal.org
OOE = Object Oriented Examples = One Of Each | Drupal.org
String value found, but an array or an object is required [#3412400] | Drupal.org
Wrap backtrace of UI warnings/notices in a details element [#3153567] | Drupal.org