rake assets:precompile RAILS_ENV=production not working as required

ruby-on-rails ruby-on-rails-3 ruby-on-rails-3.2 asset-pipeline precompile

137,778

Solution 1

Replace

rake assets:precompile RAILS_ENV=production

with

rake assets:precompile (RAILS_ENV=production bundle exec rake assets:precompile is the exact rake task)

Since precompilation is done in production mode only, no need to explicitly specify the environment.

Update:

Try adding the below line to your Gemfile:

group :assets do
  gem 'therubyracer'
  gem 'sass-rails', "  ~> 3.1.0"
  gem 'coffee-rails', "~> 3.1.0"
  gem 'uglifier'
end

Then run bundle install.

Hope it will work :)

Solution 2

Have you added this gem to your gemfile?

# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'

move that gem out of assets group and then run bundle again, I hope that would help!

Solution 3

To explain the problem, your error is as follows:

LoadError: cannot load such file -- uglifier
      (in /home/cool_tech/cool_tech/app/assets/javascripts/application.js)

This means somewhere in application.js, your app is referencing uglifier (probably in the manifest area at the top of the file). To fix the issue, you either need to remove the reference to uglifier, or make sure the uglifier file is present in your app, hence the answers you've been provided

Fix

If you've had no luck with adding the gem to your GemFile, a quick fix would be to remove any reference to uglifier in your application.js manifest. This, of course, will be temporary, but will at least allow you to precompile your assets

137,778

Author by

Green

Updated on February 24, 2020

Comments

Green about 4 years

I am trying to precompile assets using the command rake assets:precompile RAILS_ENV=production, but I always get the error below.

** Invoke assets:precompile (first_time)
    ** Execute assets:precompile
    /usr/bin/ruby /usr/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
    ** Invoke assets:precompile:all (first_time)
    ** Execute assets:precompile:all
    ** Invoke assets:precompile:primary (first_time)
    ** Invoke assets:environment (first_time)
    ** Execute assets:environment
    ** Invoke environment (first_time)
    ** Execute environment
    ** Invoke tmp:cache:clear (first_time)
    ** Execute tmp:cache:clear
    ** Execute assets:precompile:primary
    rake aborted!
    LoadError: cannot load such file -- uglifier
      (in /home/cool_tech/cool_tech/app/assets/javascripts/application.js)
    /usr/lib/ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in `require'
    /usr/lib/ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in `block in require'
    /usr/lib/ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:236:in `load_dependency'
    /usr/lib/ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in `require'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:31:in `registered_js_compressor'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/bootstrap.rb:18:in `block in run'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:80:in `call'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:80:in `compressor'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:74:in `compress'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/processing.rb:265:in `block in js_compressor='
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/processor.rb:29:in `call'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/processor.rb:29:in `evaluate'
    /usr/lib/ruby/gems/2.0.0/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/context.rb:193:in `block in evaluate'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `evaluate'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/bundled_asset.rb:26:in `initialize'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `new'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `build_asset'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/index.rb:93:in `block in build_asset'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/caching.rb:19:in `cache_asset'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/index.rb:92:in `build_asset'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:169:in `find_asset'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/index.rb:60:in `find_asset'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/static_compiler.rb:19:in `block in compile'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:219:in `block in each_logical_path'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:206:in `block (2 levels) in each_file'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each_entry'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:204:in `block in each_file'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each_file'
    /usr/lib/ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:217:in `each_logical_path'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/static_compiler.rb:18:in `compile'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:56:in `internal_precompile'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:70:in `block (3 levels) in <top (required)>'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `call'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `block in execute'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `execute'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
    /usr/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:165:in `invoke'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `call'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `block in execute'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `execute'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
    /usr/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:165:in `invoke'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:150:in `invoke_task'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block in top_level'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:115:in `run_with_threads'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:100:in `top_level'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:78:in `block in run'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:176:in `standard_exception_handling'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:75:in `run'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/bin/rake:33:in `<top (required)>'
    /usr/bin/rake:23:in `load'
    /usr/bin/rake:23:in `<main>'
    Tasks: TOP => assets:precompile:primary
    rake aborted!
    Command failed with status (1): [/usr/bin/ruby /usr/bin/rake assets:precomp...]
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:54:in `block in create_shell_runner'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:45:in `call'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:45:in `sh'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils_ext.rb:37:in `sh'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:82:in `ruby'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils_ext.rb:37:in `ruby'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:12:in `ruby_rake_task'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
    /usr/lib/ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `call'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `block in execute'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `execute'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
    /usr/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:165:in `invoke'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:150:in `invoke_task'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `each'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block in top_level'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:115:in `run_with_threads'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:100:in `top_level'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:78:in `block in run'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:176:in `standard_exception_handling'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:75:in `run'
    /usr/lib/ruby/gems/2.0.0/gems/rake-10.2.2/bin/rake:33:in `<top (required)>'
    /usr/bin/rake:23:in `load'
    /usr/bin/rake:23:in `<main>'
    Tasks: TOP => assets:precompile

Does anybody has any idea what could be wrong? Thanks.

Rajesh Omanakuttan about 10 years

Just try with the full command 'RAILS_ENV=production bundle exec rake assets:precompile'.
Green about 10 years

I have added gem 'uglifier', '>= 1.0.3'
Rajesh Omanakuttan about 10 years

Just check the update for the answer. I think the bundle is missing uglifier gem. Please try it.
Rajdeep Singh about 10 years

move that gem out of assets group, I hope that would help!
Green about 10 years

i have added it before, don't know why it show that error althought I had uglifier.
Rajdeep Singh about 10 years

This question might help you stackoverflow.com/questions/11444998/…
Green about 10 years

tks for your help, I read this question yesterday but it have same error
Green about 10 years

I delete all content in application.js but it still have that error
Richard Peck about 10 years

Wow okay - do you have any references to uflify in any dependent JS files? Failing that, do you have any gems which would call it? Any JS-centric gems?
Green about 10 years

honestly I don't know what uflify use for, so I am sure that my .js file don't have references to uflify. But I dont know other gem would call it or not.
Richard Peck about 10 years

Can you put your project into a Github repo & share it with us? It will help us diagnose any potential issues you may have
Green about 10 years

since it 's my company's project, I cant do it. Tks for your help :)
Carlos Morales over 7 years

Just use "rake assets:precompile" and then add the group code :assets.