Ruby on rails error goes on refreshing the browser - devise

Question

I am stuck with this weird problem. This problem is only in the production server, at local server it works fine.
I checked my production log and found that the error was at line:
ActionView::Template::Error (undefined method `full_name' for nil:NilClass)
But when I refresh the browser the error was gone and page loads normally. I am not sure what was making the error.
Here is my log:
Started GET "/advertisements" for 182.93.88.6 at 2013-07-13 23:47:39 -0700
Processing by AdvertisementsController#index as HTML
Rendered shared/_profile_menu.html.erb (37.8ms)
Rendered advertisements/index.html.erb within layouts/application (38.1ms)
Completed 500 Internal Server Error in 40ms
ActionView::Template::Error (undefined method `full_name' for nil:NilClass):
4: <div class="six columns">
5: <ul class="breadcrumbs hide-for-small">
6: <li>Home</li>
7: <li class="current">
8: <% if current_user %>
9: <%= link_to "#{current_user.full_name unless current_user.full_name.nil?}", user_path(current_user) %>
10: <% else %>
app/views/shared/_profile_menu.html.erb:7:in `_app_views_shared__profile_menu_html_erb__3873584509912802681_40734020'
app/views/advertisements/index.html.erb:1:in `_app_views_advertisements_index_html_erb___4140482918641285695_46665240'
Started GET "/advertisements" for 182.93.88.6 at 2013-07-13 23:47:41 -0700
Processing by AdvertisementsController#index as HTML
Rendered shared/_profile_menu.html.erb (1.4ms)
Rendered advertisements/index.html.erb within layouts/application (5.5ms)
Rendered shared/_head.html.erb (0.9ms)
Rendered shared/_top_link.html.erb (0.0ms)
Rendered shared/_logo.html.erb (0.5ms)
Rendered shared/_header.html.erb (0.9ms)
Rendered shared/_footer.html.erb (6.6ms)
Rendered shared/_popups.html.erb (0.0ms)
Completed 200 OK in 17ms (Views: 14.4ms | ActiveRecord: 1.2ms)
I am using devise for managing user login and full_name is set to accessible attribute in the user.rb Model as:
attr_accessible :full_name
The server environment is set with nginx, unicorn, capistrano and mysql database. Any help will be greatly appreciated. Thanks in advance.

Answer 1

Looks like there has been some sort of Server problem. I redeployed the application and everything worked fine.