Ruby Error

helios new hexadecimal
         create  .env
         create  .gitignore
         create  config.ru
         create  Gemfile
         create  Procfile
         create  README.md
            run  bundle install
Fetching gem metadata from https://rubygems.org/.........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies..............
Using CFPropertyList 2.3.1
Using i18n 0.7.0
Using json 1.8.2
Using minitest 5.7.0
Using thread_safe 0.3.5
Using tzinfo 1.2.2
Using activesupport 4.2.1
Using backports 3.6.4
Using builder 3.2.2
Using chunky_png 1.3.4
Using coffee-script-source 1.9.1.1
Using execjs 2.5.2
Using coffee-script 2.4.1
Using highline 1.7.2
Using commander 4.3.4
Using fssm 0.2.10
Using sass 3.2.19
Using compass 0.12.7
Using mini_portile 0.6.2
Using nokogiri 1.6.6.2
Using core_data 0.1.2
Using excon 0.45.3
Using fission 0.5.0
Using formatador 0.2.5
Using mime-types 2.6.1
Using net-ssh 2.9.2
Using net-scp 1.2.1
Using fog-core 1.30.0
Using fog-xml 0.1.2
Using fog-atmos 0.1.0
Using multi_json 1.11.0
Using fog-json 1.0.1
Using ipaddress 0.8.0
Using fog-aws 0.4.0
Using inflecto 0.0.2
Using fog-brightbox 0.7.1
Using fog-ecloud 0.1.1
Using fog-google 0.0.5
Using fog-local 0.2.1
Using fog-powerdns 0.1.1
Using fog-profitbricks 0.0.2
Using fog-radosgw 0.0.4
Using fog-riakcs 0.1.0
Using fog-sakuracloud 1.0.1
Using fog-serverlove 0.1.2
Using fog-softlayer 0.4.6
Using fog-storm_on_demand 0.1.1
Using fog-terremark 0.1.0
Using fog-vmfusion 0.1.0
Using fog-voxel 0.1.0
Using fog 1.30.0
Using thor 0.19.1
Using foreman 0.78.0
Using tilt 1.4.1
Using haml 4.0.6
Using houston 2.2.3
Using pg 0.18.2
Using rack 1.6.1
Using rack-contrib 1.2.0
Using sequel 3.48.0
Using rack-protection 1.5.3
Using sinatra 1.4.6
Using terminal-table 1.4.5
Using venice 0.2.0
Using rack-in-app-purchase 0.1.1
Using plist 3.1.0
Using rack-newsstand 0.1.2
Using rack-passbook 0.2.0
Using sinatra-param 0.1.3
Using rack-push-notification 0.5.3
Using rack-test 0.6.3
Using sinatra-contrib 1.4.2
Using rack-scaffold 0.2.0
Using rails-database-url 1.0.0
Using jsmin 1.0.1
Using sinatra-assetpack 0.2.3
Using sinatra-backbone 0.1.1
Using sinatra-support 1.2.2
Using zurb-foundation 4.1.2
Using helios 0.4.1
Using kgio 2.9.3
Using raindrops 0.13.0
Using unicorn 4.9.0
Using bundler 1.10.1
Bundle complete! 3 Gemfile dependencies, 84 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
            run  git init
Initialized empty Git repository in /Volumes/Data/Web/Heroku/hexadecimal/.git/
[master (root-commit) 5b80308] Initial Commit
 7 files changed, 321 insertions(+)
 create mode 100644 .env
 create mode 100644 .gitignore
 create mode 100644 Gemfile
 create mode 100644 Gemfile.lock
 create mode 100644 Procfile
 create mode 100644 README.md
 create mode 100644 config.ru
/Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:121:in `require': cannot load such file -- dotenv (LoadError)
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:121:in `require'
	from /Library/Ruby/Gems/2.0.0/gems/helios-0.4.1/lib/helios/commands/server.rb:1:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:69:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:69:in `require'
	from /Library/Ruby/Gems/2.0.0/gems/helios-0.4.1/lib/helios/commands.rb:4:in `<top (required)>'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:69:in `require'
	from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:69:in `require'
	from /Library/Ruby/Gems/2.0.0/gems/helios-0.4.1/bin/helios:20:in `<top (required)>'
	from /usr/bin/helios:23:in `load'
	from /usr/bin/helios:23:in `<main>'