path for an engine is not recognized

I need your support to verify this situation I am following the documentation, to make a engine with rubyOnRails and I want to test the gem as the documentation says.

I add in the file that will call the engine:

gem 'blorgh', path: 'engines/blorgh'

And the following comes out in the terminal:

  

machan @ Lenovo: ~ / Documents / Ruby / muestra_engine / unicorn $ bundle install   The path /home/machan/Documentos/Ruby/muestra_engine/unicorn/engines/blorgh does not exist.

Any idea what my mistake is?

I would appreciate your help.