Update routes.rb

config/routes.rb

@@ -23,7 +23,7 @@ get 'qbo/estimate/:id', :to => 'estimate#show', as: :estimate
 get 'qbo/invoice/:id', :to => 'invoice#show', as: :invoice
 
 #manual billing
-get 'qbo/bill/:id', :to => 'qbo#bill', as: :issue
+get 'qbo/bill/:id', :to => 'qbo#bill', as: :bill
 
 #payments
 resources :payments