Redmine

Deleting role that used by many projects (in my environment, it is used in 30 projects) raises ActionDispatch::Cookies::CookieOverflow.
The flash message is too long to store session.

# app/controllers/roles_controller.rb
def destroy
...
   flash[:error] += l(:error_can_not_remove_role_reason_members_html, projects: links)
...
end

ActionDispatch::Cookies::CookieOverflow (_redmine_session cookie overflowed with size 4206 bytes):

actionpack (7.2.2.2) lib/action_dispatch/middleware/cookies.rb:612:in `check_for_overflow!'
actionpack (7.2.2.2) lib/action_dispatch/middleware/cookies.rb:694:in `commit'
actionpack (7.2.2.2) lib/action_dispatch/middleware/cookies.rb:530:in `[]='
actionpack (7.2.2.2) lib/action_dispatch/middleware/session/cookie_store.rb:117:in `set_cookie'
...

It is better to use flash.now instead of flash.