When a template is missing, this message is added to the logs:

Missing template, responding with 404

We could complete this message with useful details. For instance:

Missing partial issues/_list_simple with {:locale=>[:fr, :en], :formats=>[:html], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :rsb]}. Searched in:
  * "/redmine/app/views"

Here is my current patch:

 app/controllers/application_controller.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index a05f54077..a71103a89 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -502,8 +502,8 @@ class ApplicationController < ActionController::Base
   end

   # Handler for ActionView::MissingTemplate exception
-  def missing_template
-    logger.warn "Missing template, responding with 404"
+  def missing_template(exception)
+    logger.warn "Missing template, responding with 404: #{exception}"
     @project = nil
     render_404
   end
--