Trying to deploy Rails App with Capistrano to Do Droplet

Question

I would like to deploy my app on my server and use capistrano. However, I come across the following error(s) again and again and don't know how to fix it. First the error was that he couldn't find Yarn or something was wrong with the Yui Compressor i guess, i think cant file or something like that. Then i installed Yarn on my terminal and the error changed to this one:

 Caused by: SSHKit::Command::Failed: rake exit status: 1 rake stdout: DEPRECATION WARNING: Sprockets method register_engine is deprecated. Please register a mime type using register_mime_type then use register_compressor or register_transformer. https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors (called from block in class:Railtie at /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/less-rails-2.8.0/lib/less/rails/railtie.rb:16) DEPRECATION WARNING: You are using a deprecated processor interface Less::Rails::ImportProcessor. Please update your processor interface: https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors (called from block in class:Railtie at /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/less-rails-2.8.0/lib/less/rails/railtie.rb:21) Yarn executable was not detected in the system. Download Yarn at https://yarnpkg.com/en/docs/install /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/bin/rake: No such file or directory - java rake aborted! YUI::Compressor::RuntimeError: Command 'java -jar /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/../yuicompressor-2.4.8.jar --type css --charset utf-8 /tmp/yui_compress20180918-14505-sgrpkh' returned non-zero exit status /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:106:in block in compress' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:141:instreamify' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:86:in compress' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/yui_compressor.rb:49:incall' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/yui_compressor.rb:28:in call' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:incall_processor' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in block in call_processors' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:inreverse_each' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in call_processors' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:inload_from_unloaded' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in block in load' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:infetch_asset_from_dependency_cache' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in load' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:inblock in initialize' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in load' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:66:infind_asset' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:73:in find_all_linked_assets' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:142:inblock in find' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:114:in block (2 levels) in logical_paths' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:228:inblock in stat_tree' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:212:in block in stat_directory' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:209:ineach' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:209:in stat_directory' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:227:instat_tree' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:105:in each' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:105:inblock in logical_paths' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:104:in each' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:104:inlogical_paths' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:140:in find' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:186:incompile' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:68:in block (3 levels) in define' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/rake/sprocketstask.rb:147:inwith_logger' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:67:in block (2 levels) in define' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/rake-12.3.1/exe/rake:27:in' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli/exec.rb:74:in load' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli/exec.rb:74:inkernel_load' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli/exec.rb:28:in run' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli.rb:424:inexec' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor/command.rb:27:in run' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:ininvoke_command' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor.rb:387:in dispatch' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli.rb:27:indispatch' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor/base.rb:466:in start' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli.rb:18:instart' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/exe/bundle:30:in block in <top (required)>' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/friendly_errors.rb:124:inwith_friendly_errors' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/exe/bundle:22:in <top (required)>' /home/deploy/.rvm/gems/ruby-2.5.1/bin/bundle:23:inload' /home/deploy/.rvm/gems/ruby-2.5.1/bin/bundle:23:in <main>' /home/deploy/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:ineval' /home/deploy/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:in `' Tasks: TOP => assets:precompile (See full trace by running task with --trace) rake stderr: Nothing written Tasks: TOP => deploy:assets:precompile (See full trace by running task with --trace) The deploy has failed with an error: Exception while executing on host 104.248.180.170: rake exit status: 1 rake stdout: DEPRECATION WARNING: Sprockets method register_engine is deprecated. Please register a mime type using register_mime_type then use register_compressor or register_transformer. https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors (called from block in class:Railtie at /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/less-rails-2.8.0/lib/less/rails/railtie.rb:16) DEPRECATION WARNING: You are using a deprecated processor interface Less::Rails::ImportProcessor. Please update your processor interface: https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors (called from block in class:Railtie at /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/less-rails-2.8.0/lib/less/rails/railtie.rb:21) Yarn executable was not detected in the system. Download Yarn at https://yarnpkg.com/en/docs/install /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/bin/rake: No such file or directory - java rake aborted! YUI::Compressor::RuntimeError: Command 'java -jar /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/../yuicompressor-2.4.8.jar --type css --charset utf-8 /tmp/yui_compress20180918-14505-sgrpkh' returned non-zero exit status /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:106:in block in compress' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:141:instreamify' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:86:in compress' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/yui_compressor.rb:49:incall' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/yui_compressor.rb:28:in call' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:incall_processor' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in block in call_processors' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:inreverse_each' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in call_processors' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:inload_from_unloaded' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in block in load' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:infetch_asset_from_dependency_cache' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in load' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:inblock in initialize' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in load' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:66:infind_asset' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:73:in find_all_linked_assets' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:142:inblock in find' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:114:in block (2 levels) in logical_paths' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:228:inblock in stat_tree' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:212:in block in stat_directory' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:209:ineach' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:209:in stat_directory' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/path_utils.rb:227:instat_tree' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:105:in each' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:105:inblock in logical_paths' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:104:in each' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/legacy.rb:104:inlogical_paths' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:140:in find' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:186:incompile' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:68:in block (3 levels) in define' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/rake/sprocketstask.rb:147:inwith_logger' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:67:in block (2 levels) in define' /home/deploy/apps/Blogapp/shared/bundle/ruby/2.5.0/gems/rake-12.3.1/exe/rake:27:in' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli/exec.rb:74:in load' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli/exec.rb:74:inkernel_load' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli/exec.rb:28:in run' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli.rb:424:inexec' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor/command.rb:27:in run' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:ininvoke_command' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor.rb:387:in dispatch' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli.rb:27:indispatch' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/vendor/thor/lib/thor/base.rb:466:in start' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/cli.rb:18:instart' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/exe/bundle:30:in block in <top (required)>' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/lib/bundler/friendly_errors.rb:124:inwith_friendly_errors' /home/deploy/.rvm/gems/ruby-2.5.1/gems/bundler-1.16.5/exe/bundle:22:in <top (required)>' /home/deploy/.rvm/gems/ruby-2.5.1/bin/bundle:23:inload' /home/deploy/.rvm/gems/ruby-2.5.1/bin/bundle:23:in <main>' /home/deploy/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:ineval' /home/deploy/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:in `' Tasks: TOP => assets:precompile (See full trace by running task with --trace) rake stderr: Nothing written ** DEPLOY FAILED 

My Capfile:

 # Load DSL and set up stages require "capistrano/setup" # Include default deployment tasks require "capistrano/deploy" # Load the SCM plugin appropriate to your project: # # require "capistrano/scm/hg" # install_plugin Capistrano::SCM::Hg # or # require "capistrano/scm/svn" # install_plugin Capistrano::SCM::Svn # or require "capistrano/scm/git" install_plugin Capistrano::SCM::Git # Include tasks from other gems included in your Gemfile # # For documentation on these, see for example: # # https://github.com/capistrano/rvm # https://github.com/capistrano/rbenv # https://github.com/capistrano/chruby # https://github.com/capistrano/bundler # https://github.com/capistrano/rails # https://github.com/capistrano/passenger # require "capistrano/bundler" require "capistrano/rvm" require "capistrano/rails/assets" require "capistrano/rails/migrations" require "capistrano/passenger" require "capistrano/puma" # Load custom tasks from `lib/capistrano/tasks` if you have any defined Dir.glob("lib/capistrano/tasks/*.rake").each { |r| import r } 

My Deploy.rb

 # Change these server 'xxx.xxx.xxx', port: 22, roles: [:web, :app, :db], primary: true set :repo_url, 'git@github.com:WebSepp/Blogapp.git' set :application, 'Blogapp' set :user, 'deploy' set :puma_threads, [4, 16] set :puma_workers, 0 # Don't change these unless you know what you're doing set :pty, true set :use_sudo, false set :stage, :production set :deploy_via, :remote_cache set :deploy_to, "/home/#{fetch(:user)}/apps/#{fetch(:application)}" set :puma_bind, "unix://#{shared_path}/tmp/sockets/#{fetch(:application)}-puma.sock" set :puma_state, "#{shared_path}/tmp/pids/puma.state" set :puma_pid, "#{shared_path}/tmp/pids/puma.pid" set :puma_access_log, "#{release_path}/log/puma.error.log" set :puma_error_log, "#{release_path}/log/puma.access.log" set :ssh_options, { forward_agent: true, user: fetch(:user), keys: %w(~/.ssh/usa) } set :linked_files, %w{config/master.key} set :puma_preload_app, true set :puma_worker_timeout, nil set :puma_init_active_record, true # Change to false when not using ActiveRecord ## Defaults: # set :scm, :git # set :branch, :master # set :format, :pretty # set :log_level, :debug # set :keep_releases, 5 ## Linked Files & Directories (Default None): # set :linked_files, %w{config/database.yml} # set :linked_dirs, %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system} namespace :puma do desc 'Create Directories for Puma Pids and Socket' task :make_dirs do on roles(:app) do execute "mkdir #{shared_path}/tmp/sockets -p" execute "mkdir #{shared_path}/tmp/pids -p" end end before :start, :make_dirs end namespace :deploy do desc "Make sure local git is in sync with remote." task :check_revision do on roles(:app) do unless `git rev-parse HEAD` == `git rev-parse origin/master` puts "WARNING: HEAD is not the same as origin/master" puts "Run `git push` to sync changes." exit end end end desc 'Initial Deploy' task :initial do on roles(:app) do before 'deploy:restart', 'puma:start' invoke 'deploy' end end desc 'Restart application' task :restart do on roles(:app), in: :sequence, wait: 5 do invoke 'puma:restart' end end before :starting, :check_revision after :finishing, :compile_assets after :finishing, :cleanup after :finishing, :restart end # ps aux | grep puma # Get puma pid # kill -s SIGUSR2 pid # Restart puma # kill -s SIGTERM pid # Stop puma 

My Gemfile:

 source 'https://rubygems.org' git_source(:github) { |repo| "https://github.com/#{repo}.git" } ruby '2.5.1' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '~> 5.2.0' # Use sqlite3 as the database for Active Record gem 'sqlite3' # Use Puma as the app server group :development do gem "capistrano", "~> 3.7" gem "capistrano-rails", "~> 1.2" gem "capistrano-passenger", "~> 0.2.0" gem "capistrano-yarn" gem "capistrano-puma" gem "capistrano-rvm" #Add this if you"re using rbenv end gem 'puma' gem 'sprockets-rails', :require => 'sprockets/railtie' # Use SCSS for stylesheets gem 'sass-rails' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '>= 1.3.0' # See https://github.com/rails/execjs#readme for more supported runtimes # gem 'mini_racer', platforms: :ruby # Use CoffeeScript for .coffee assets and views gem 'coffee-rails', '~> 4.2' # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks gem 'turbolinks', '~> 5' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 2.5' # Use Redis adapter to run Action Cable in production # gem 'redis', '~> 4.0' # Use ActiveModel has_secure_password # gem 'bcrypt', '~> 3.1.7' # gem 'jquery-rails', '~> 4.3', '>= 4.3.3' #gem less style gem 'therubyracer' gem 'less-rails' #Sprockets (what Rails 3.1 uses for its asset pipeline) supports LESS #Use twitter bootstrap gem 'twitter-bootstrap-rails' gem 'friendly_id', '~> 5.2.0' gem 'will_paginate', '~> 3.1.0' gem 'trix-rails', require: 'trix' gem 'shrine' gem 'devise' gem 'timepiece' gem 'social-share-button' # Use ActiveStorage variant # gem 'mini_magick', '~> 4.8' # Use Capistrano for deployment # gem 'capistrano-rails', group: :development # Reduces boot times through caching; required in config/boot.rb gem 'bootsnap', '>= 1.1.0', require: false group :development, :test do # Call 'byebug' anywhere in the code to stop execution and get a debugger console gem 'byebug', platforms: [:mri, :mingw, :x64_mingw] end group :development do # Access an interactive console on exception pages or by calling 'console' anywhere in the code. gem 'web-console', '>= 3.3.0' gem 'listen', '>= 3.0.5', '< 3.2' # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring gem 'spring' gem 'spring-watcher-listen', '~> 2.0.0' end group :test do # Adds support for Capybara system testing and selenium driver gem 'capybara', '>= 2.15', '< 4.0' gem 'selenium-webdriver' # Easy installation and use of chromedriver to run system tests with Chrome gem 'chromedriver-helper' end # Windows does not include zoneinfo files, so bundle the tzinfo-data gem gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby] 

Would really appreciate your help

Answer 1

Yarn executable was not detected in the system. Download Yarn at https://yarnpkg.com/en/docs/install

Did you install Yarn on your server?

Answer 2

It looks like a gem you've included in your application has a dependency on java. From the ruby-yui-compressor homepage:

Because YUI Compressor's .jar file is included in the box, Java >= 1.4 is its only dependency.

Essentially you need to install java on your server or, if it is already installed, make it available to your deploy user.