undefined method: singleton

[EnziinSystem]

My environment:

• Ruby 3.1.0
• Rails 7.0.1
• Ubuntu 20.04

I created a simple blog application for the demo and I use VSCode.

When I open any file then the typeprof gem show warning and an error message but the app does not error any.

[warning] superclass is any; Object is used insteadTypeProf
[error] undefined method: singleton(PostsController)#before_actionTypeProf

[devjoaoGustavo]

I have exactly the same problem. It seems it can't load the Rails environment.
I tried to add require_relative '../../../config/environment' at the beginning of the file and the warning messages were gone.
I'm just starting learn more about the typeprof, but I don't understand yet how could I set up the gem for loading the Ruby on Rails environment.