ActionView::TemplateError (private method `split' called for nil:NilClass) on line #153 of app/views/tuangou_list/show.html.erb: 150:

151:
152:
153: <%= repath(@tuangou.daily_image, :class => 'wh', :title=>@tuangou.view_name, :alt => @tuangou.view_name)%> 154:
155:
<%= @tuangou.shop_impress %>
156:
app/helpers/application_helper.rb:177:in `domain_prefix' app/helpers/application_helper.rb:171:in `repath' app/views/tuangou_list/show.html.erb:153 app/controllers/tuangou_list_controller.rb:57:in `show' app/controllers/application_controller.rb:39:in `exception_catch' unicorn (4.8.2) lib/unicorn/http_server.rb:572:in `process_client' unicorn (4.8.2) lib/unicorn/http_server.rb:666:in `worker_loop' unicorn (4.8.2) lib/unicorn/http_server.rb:521:in `spawn_missing_workers' unicorn (4.8.2) lib/unicorn/http_server.rb:532:in `maintain_worker_count' unicorn (4.8.2) lib/unicorn/http_server.rb:290:in `join' unicorn (4.8.2) bin/unicorn_rails:209 /usr/local/bin/unicorn_rails:19:in `load' /usr/local/bin/unicorn_rails:19