undefined method `send_bill' for BillMailer:Class

Question

I'm generating bills for my application and delivering it via email for customers. When I create a new bill it send the email but, throws the following error:

undefined method `send_bill' for BillMailer:Class
app/models/bill_observer.rb:5:in `after_create'

So, I've run the BillMailer.send_bill from rails consle and it worked fine.

This is driving me crazy, because it sends the email, but throws an error.

Any thought about what it can be?

Answer 1

I found the problem, after talk with some other rails developers, I discovered that the Threads was messing up my code I was doing something like that

Thread.new do
  #code
end

When I removed the Threads it works without strange errors