React-rails install error Webpacker configuration file not found

Question

After upgrade rails 3 to rails 4.2.4, i want to use react-rails gem in my project.i follow official react-rails document.

rake webpacker:install getting this error.

Webpacker configuration file not found /home/projects/config/webpacker.yml. Please run rails webpacker:install Error: No such file or directory @ rb_sysopen - /home/projects/config/webpacker.yml
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/configuration.rb:73:in `rescue in load'
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/configuration.rb:70:in `load'
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/configuration.rb:66:in `data'
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/configuration.rb:62:in `fetch'
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/configuration.rb:17:in `compile?'
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/manifest.rb:32:in `compiling?'
/home/.rvm/gems/ruby-2.3.4/gems/webpacker-3.5.2/lib/webpacker/manifest.rb:22:in `lookup'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering/webpacker_manifest_container.rb:42:in `find_asset'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering/bundle_renderer.rb:27:in `block in initialize'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering/bundle_renderer.rb:26:in `each'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering/bundle_renderer.rb:26:in `initialize'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering.rb:17:in `new'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering.rb:17:in `block in reset_pool'
/home/.rvm/gems/ruby-2.3.4/gems/connection_pool-0.9.3/lib/timed_queue.rb:6:in `block in initialize'
/home/.rvm/gems/ruby-2.3.4/gems/connection_pool-0.9.3/lib/timed_queue.rb:6:in `initialize'
/home/.rvm/gems/ruby-2.3.4/gems/connection_pool-0.9.3/lib/timed_queue.rb:6:in `new'
/home/.rvm/gems/ruby-2.3.4/gems/connection_pool-0.9.3/lib/timed_queue.rb:6:in `initialize'
/home/.rvm/gems/ruby-2.3.4/gems/connection_pool-0.9.3/lib/connection_pool.rb:42:in `new'
/home/.rvm/gems/ruby-2.3.4/gems/connection_pool-0.9.3/lib/connection_pool.rb:42:in `initialize'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering.rb:17:in `new'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/server_rendering.rb:17:in `reset_pool'
/home/.rvm/gems/ruby-2.3.4/gems/react-rails-2.4.4/lib/react/rails/railtie.rb:104:in `block in <class:Railtie>'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:44:in `each'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/application/finisher.rb:62:in `block in <module:Finisher>'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `instance_exec'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/initializable.rb:30:in `run'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/initializable.rb:54:in `run_initializers'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/application.rb:352:in `initialize!'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/railtie.rb:194:in `public_send'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/railtie.rb:194:in `method_missing'
/home/projects/config/environment.rb:17:in `<top (required)>'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `block in require'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in `load_dependency'
/home/.rvm/gems/ruby-2.3.4/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in `require'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/application.rb:328:in `require_environment!'
/home/.rvm/gems/ruby-2.3.4/gems/railties-4.2.4/lib/rails/application.rb:457:in `block in run_tasks_blocks'
/home/.rvm/gems/ruby-2.3.4/gems/rake-12.3.1/exe/rake:27:in `<top (required)>'

please help me, i created new demo app with rails 4.2.4 it working fine, but not my existing app.

Answer 1

Take this file into the folder /Users/YourAPP/config https://github.com/rails/webpacker/blob/master/lib/install/config/webpacker.yml