undefined method `base_url' for nil:NilClass (NoMethodError) ./tdiary/config.rb:48:in `base_url' (tdiary.conf):258:in `configure_attrs' ./tdiary/config.rb:12:in `eval' ./tdiary/config.rb:120:in `configure_attrs' ./tdiary/config.rb:12:in `initialize' image-gallery.rb:487:in `new' image-gallery.rb:487