No such file or directory @ rb_sysopen

[randomprimate]

I'm getting the following error when running the rails generator. I'm using Spree 2.4 which I'm guessing is the main issue here but I'd like to know how to go about this problem.

7ddf32e17a6ac5:crops_banners hades$ rails g spree_banner:install
      append  app/assets/javascripts/admin/all.js
/Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:98:in `binread': No such file or directory @ rb_sysopen - /Users/username/RubymineProjects/spree_banners_app/app/assets/javascripts/admin/all.js (Errno::ENOENT)
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:98:in `replace!'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:59:in `invoke!'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/actions.rb:94:in `action'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/actions/inject_into_file.rb:30:in `insert_into_file'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/actions/file_manipulation.rb:180:in `append_to_file'
    from /Users/username/.rvm/gems/ruby-2.1.5/bundler/gems/spree_banner-b14044b13e12/lib/generators/spree_banner/install/install_generator.rb:6:in `add_javascripts'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/command.rb:27:in `run'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `block in invoke_all'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `each'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `map'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `invoke_all'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/group.rb:232:in `dispatch'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/thor-0.19.1/lib/thor/base.rb:440:in `start'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/generators.rb:157:in `invoke'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/generate.rb:11:in `<top (required)>'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `block in require'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in `load_dependency'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in `require'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:135:in `generate_or_destroy'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:51:in `generate'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
    from /Users/username/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

[LightEmitting]

same issue.