Rails - Nov 2014 - Error: The path `/home/user/projects/rails_engine/vendor/engines/blorgh` does not exist.

I was learning how to create mountable engine from here 
http://guides.rubyonrails.org/engines.html , 
on this section
3.1 Generating a Post Resource

 when i try to run *rake db:migrate* i got this error  *The path 
`/home/user/projects/rails_engine/vendor/engines/blorgh` does not exist.,*



Please help me to address the issue.thanks in advance.

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