ruby on rails - Application pushed to heroku but not working due to dotenv gem -

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i have pushed heroku application not run. see due dotenv gem. there way around this? need dot-env gem in order encrypt basic auth user name , password. i'd prefer not use devise or of complexity simple application.

below heroku terminal output, issue dont know how spot errors/read output. 

  /app/config/application.rb:4:in `require': cannot load such file -- dotenv (loaderror)         /app/config/application.rb:4:in `<top (required)>'         /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:141:in `require'         /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:141:in `require_application_and_environment!'         /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:67:in `console'         /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:39:in `run_command!'         /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5/lib/rails/commands.rb:17:in `<top (required)>'         /app/bin/rails:9:in `require'         /app/bin/rails:9:in `<main>'      gem 'rails', '4.2.5'  gem 'pg'  gem 'sass-rails', '~> 5.0'  gem 'uglifier', '>= 1.3.0'  gem 'coffee-rails', '~> 4.1.0'  gem 'will_paginate', '~> 3.1.0'  gem 'jquery-rails'  gem 'turbolinks'  gem 'jbuilder', '~> 2.0'  gem 'sdoc', '~> 0.4.0', group: :doc  gem "font-awesome-rails"  gem 'dotenv-rails', :groups => [:development, :test]  gem 'will_paginate-bootstrap'  gem "paperclip", "~> 5.0.0"   group :development, :test   # call 'byebug' anywhere in code stop execution , debugger console   gem 'byebug' end  group :development   # access irb console on exception pages or using <%= console %> in views   gem 'web-console', '~> 2.0'   # gem 'dotenv-heroku'    # spring speeds development keeping application running in background. read more: https://github.com/rails/spring   gem 'spring' end

you configured dotenv gem enabled development , test environments:

gem 'dotenv-rails', :groups => [:development, :test]

however, application started in production environment in heroku. therefore, rails application crash because tries load gem it's not available.

you manually included dotenv loading code somewhere in application:

dotenv::railtie.load

you need remove (as dotenv inject in load process, when gem loaded), or wrap code within conditional block executes if dotenv defined

if defined? dotenv   # .. end

unless need manually load library (and don't), remove explicit statement, explained in documentation.

dotenv initialized in rails app during before_configuration callback, fired when application constant defined in config/application.rb class application < rails::application. if need initialized sooner, can manually call dotenv::railtie.load.


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