Suspenders for new developer setup

I am using suspenders for my side project.
And I have another developer trying to help me.
so he clone my project and tried bin/setup commend.

And it generate this error messages

/home/oiojin831/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/factory_girl_rails-4.5.0/bin/setup:6:in `<top (required)>': undefined local variable or method `e' for main:Object (NameError)                                                                             
    from bin/setup:16:in `load'                                                                                                                                                                                                                                       
    from bin/setup:16:in `<main>' 

it seems like it is coming from last line from bin/setup which redirect to setup file in factory girl.

can someone help me solving this problem?

Thank you in advance.

What does echo $PATH show?

my PATH is

Did something get cut off the end when you pasted? /home/oiojin831/.rb doesn’t look right.

Oh my bad.
But that’s not the reason I am getting this error.