Issue #3209619 by longwave, daffie, catch: [Symfony 6] Passing null as $message to Symfony exception constructors is deprecated, pass an empty string instead

Issue #2902726 by mfernea, martin107: Fix 'Drupal.Commenting.FunctionComment.ParamCommentNotCapital' coding standard

Issue #2808233 by gnuget, dawehner, Wim Leers, tedbow, Chi, dysrama: REST 403 responses don't tell the user *why* access is not granted: requires deep Drupal understanding to figure out

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits