- Issue created by @ressa
- 🇩🇰Denmark ressa Copenhagen
The cause is missing route cachability metadata in civicrm/src/CivicrmBreadcrumbBuilder.php, so not a Drupal core issue.
Tip: To find the problem, go to the contrib modules folder, do this search, and look for the word "Bread":
$ grep -liR "RouteMatchInterface" . ./admin_toolbar/admin_toolbar_links_access_filter/admin_toolbar_links_access_filter.module ./admin_toolbar/admin_toolbar_search/admin_toolbar_search.module ./admin_toolbar/admin_toolbar_tools/src/AdminToolbarToolsHelper.php ./admin_toolbar/admin_toolbar_tools/admin_toolbar_tools.module ./admin_toolbar/admin_toolbar.module ./civicrm_entity/src/Plugin/views/argument/Date.php ./civicrm/src/CivicrmBreadcrumbBuilder.php ./civicrm/modules/civicrmtheme/src/Theme/CivicrmThemeNegotiator.php