/Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'mysql2'. (Bundler::GemRequireError)
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler/runtime.rb:72:in `each'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler/runtime.rb:72:in `block in require'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler/runtime.rb:61:in `each'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler/runtime.rb:61:in `require'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/bundler-1.11.1/lib/bundler.rb:99:in `require'
        from /Users/denysbutenko/dev/pia/config/application.rb:7:in `<top (required)>'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/railties-3.2.22/lib/rails/commands.rb:53:in `require'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/railties-3.2.22/lib/rails/commands.rb:53:in `block in <top (required)>'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/railties-3.2.22/lib/rails/commands.rb:50:in `tap'
        from /Users/denysbutenko/.rvm/gems/ruby-2.1.5@privateinternetaccess/gems/railties-3.2.22/lib/rails/commands.rb:50:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'