Get "...kernel_require.rb:120:in `require': cannot load such file" error when I am trying to run my TC

I am trying to set my test env. up on c9.io cloud. I used project that successfully work on Windows. But on this .c9.io cloud (Linux operation system) I get "kernel_require.rb:120:in `require': cannot load such file" error when I am trying to run my TC.

My project is here: http://ift.tt/2eJefFV