$ yarn --version
[DEPRECATION] The trollop gem has been renamed to optimist and will no longer be supported. Please switch to optimist as soon as possible.
Yarn v0.1.1 2011 Jesper Kjeldgaard

 rails assets:precompile
Traceback (most recent call last):
        4: from /home/pop/.rvm/gems/ruby-2.7.2/bin/ruby_executable_hooks:22:in `<main>'
        3: from /home/pop/.rvm/gems/ruby-2.7.2/bin/ruby_executable_hooks:22:in `eval'
        2: from /home/pop/.rvm/gems/ruby-2.7.2/bin/yarn:23:in `<main>'
        1: from /home/pop/.rvm/gems/ruby-2.7.2/gems/bundler-2.2.11/lib/bundler/rubygems_integration.rb:390:in `block in replace_bin_path'
/home/pop/.rvm/gems/ruby-2.7.2/gems/bundler-2.2.11/lib/bundler/rubygems_integration.rb:362:in `block in replace_bin_path': can't find executable yarn for gem yarn. yarn is not currently included in the bundle, perhaps you meant to add it to your Gemfile? (Gem::Exception)
Yarn not installed. Please download and install Yarn from https://yarnpkg.com/lang/en/docs/install/
Exiting!

-sh-4.2$ cd .bundle/
-sh-4.2$ ls
config
-sh-4.2$ ls -lh
total 4.0K
-rw-r--r-- 1 webapp webapp 94 Mar  3 07:58 config
-sh-4.2$ cat config 
---
BUNDLE_DEPLOYMENT: "true"
BUNDLE_PATH: "vendor/bundle"
BUNDLE_WITHOUT: "test:development"
-sh-4.2$ 

[ec2-user@ip-172-31-28-237 ~]$ yarn -v
1.22.5

$ node -v
v14.16.0
$ yarn -v
1.22.5
$ rails assets:precompile
Warning: the running version of Bundler (2.1.4) is older than the version that created the lockfile (2.2.11). We suggest you to upgrade to the version that created the lockfile by running `gem install bundler:2.2.11`.
Compiling...
Compilation failed:
yarn run v1.22.5
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.


error Command "webpack" not found.