Actualiza a Redmine 3.4.13

app/controllers/issues_controller.rb

@@ -40,7 +40,8 @@ class IssuesController < ApplicationController
   helper :timelog
 
   def index
-    retrieve_query
+    use_session = !request.format.csv?
+    retrieve_query(IssueQuery, use_session)
 
     if @query.valid?
       respond_to do |format|
@@ -367,7 +368,12 @@ class IssuesController < ApplicationController
       when 'destroy'
         # nothing to do
       when 'nullify'
+        if Setting.timelog_required_fields.include?('issue_id')
+          flash.now[:error] = l(:field_issue) + " " + ::I18n.t('activerecord.errors.messages.blank')
+          return
+        else
         time_entries.update_all(:issue_id => nil)
+        end
       when 'reassign'
         reassign_to = @project && @project.issues.find_by_id(params[:reassign_to_id])
         if reassign_to.nil?