Change ckeditor gem and kaminari in gemfile

vendor/built_in_modules/announcement/app/views/panel/announcement/back_end/bulletins/_form.html.erb

@@ -194,7 +194,7 @@
           <div class="controls">
             <div class="textarea">
               <%= f.fields_for :text_translations do |f| %>
-                <%= f.text_area locale, rows: 5, class: "ckeditor input-block-level", id: "content_#{locale}", name: "content_#{locale}", :value => (@bulletin.text_translations[locale] rescue nil) %>
+                <%= f.cktext_area locale, rows: 5, class: "input-block-level", id: "content_#{locale}", name: "content_#{locale}", :value => (@bulletin.text_translations[locale] rescue nil) %>
               <% end %>
             </div>
           </div>