I cant't run my spree project in production environment

[alantellecom]

I'm searching one solution for my question on web, but probably no one had the same problem.

Before deploy my spree project on cloud, I'm trying to run it in my local host like RAILS_ENV=prodution, but I always receive the same error:

expected file /usr/local/bundle/bundler/gems/better_spree_paypal_express-181cce8bcd14/app/controllers/spree/admin/payments_controller_decorator.rb to define constant Spree::Admin::PaymentsControllerDecorator, but didn't (NameError)

I have this problem just on production environment and I realize this one happen when I try to use the spree_paypal_expresss gem.

I'm using rails 6 and spree 4.0 and sqlite just to test.

Do you have idea about what is happen?

Thanks.