Version 2.8.0 raises ExecJS::ProgramError: TypeError: Cannot read property 'version' of undefined

[SuwakoMmh]

Hi, I don't know much about jekyll or ruby or rails or exec-js
My project won't build with version 2.8.0

here's the traceback :

ExecJS::ProgramError: TypeError: Cannot read property 'version' of undefined
  eval (eval at <anonymous> ((execjs):1:213), <anonymous>:1:10)
  (execjs):1:213
  (execjs):16:14
  (execjs):1:40
  Object.<anonymous> ((execjs):1:58)
  Module._compile (internal/modules/cjs/loader.js:1063:30)
  Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
  Module.load (internal/modules/cjs/loader.js:928:32)
  Function.Module._load (internal/modules/cjs/loader.js:769:14)
  Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
  /usr/lib64/ruby/gems/2.6.0/gems/execjs-2.8.0/lib/execjs/external_runtime.rb:39:in `exec'
  /usr/lib64/ruby/gems/2.6.0/gems/execjs-2.8.0/lib/execjs/external_runtime.rb:21:in `eval'
  /usr/lib64/ruby/gems/2.6.0/gems/execjs-2.8.0/lib/execjs/runtime.rb:64:in `eval'
  /usr/lib64/ruby/gems/2.6.0/gems/autoprefixer-rails-9.8.6.5/lib/autoprefixer-rails/processor.rb:170:in `runtime'
  /usr/lib64/ruby/gems/2.6.0/gems/autoprefixer-rails-9.8.6.5/lib/autoprefixer-rails/processor.rb:53:in `process'
  /usr/lib64/ruby/gems/2.6.0/gems/autoprefixer-rails-9.8.6.5/lib/autoprefixer-rails.rb:16:in `process'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:27:in `block (2 levels) in process'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:23:in `open'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:23:in `block in process'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:20:in `each'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:20:in `process'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-autoprefixer-1.0.2/lib/jekyll-autoprefixer.rb:24:in `block in <top (required)>'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/hooks.rb:103:in `block in trigger'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/hooks.rb:102:in `each'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/hooks.rb:102:in `trigger'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:234:in `write'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/site.rb:82:in `process'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:28:in `process_site'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:65:in `build'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:36:in `process'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `each'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/serve.rb:86:in `block (2 levels) in init_with_program'
  /usr/lib64/ruby/gems/2.6.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
  /usr/lib64/ruby/gems/2.6.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
  /usr/lib64/ruby/gems/2.6.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
  /usr/lib64/ruby/gems/2.6.0/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
  /usr/lib64/ruby/gems/2.6.0/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
  /usr/lib64/ruby/gems/2.6.0/gems/jekyll-4.2.0/exe/jekyll:15:in `<top (required)>'
  /usr/bin/jekyll:9:in `load'
  /usr/bin/jekyll:9:in `<top (required)>'

I don't know if it's a jekyll issue or an execjs issue, meanwhile we're rolling back to 2.7.0.
Best Regards,
SuwakoMmh.

[marie-bnl]

Note: actually I just noticed it doesn't break jekyll, but its plugin jekyll-autoprefixer

I also created an issue at jekyll-autoprefixer

[vrodokanakis]

I just had the same error during precompilation and we don't use jekyll at all.

ExecJS::ProgramError: TypeError: Cannot read property 'version' of undefined
eval (eval at <anonymous> ((execjs):1:213), <anonymous>:1:10)
(execjs):1:213
(execjs):16:14
(execjs):1:40
Object.<anonymous> ((execjs):1:58)
Module._compile (internal/modules/cjs/loader.js:999:30)
Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
Module.load (internal/modules/cjs/loader.js:863:32)
Function.Module._load (internal/modules/cjs/loader.js:708:14)
Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/execjs-2.8.0/lib/execjs/external_runtime.rb:39:in `exec'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/execjs-2.8.0/lib/execjs/external_runtime.rb:21:in `eval'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/execjs-2.8.0/lib/execjs/runtime.rb:64:in `eval'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/autoprefixer-rails-9.4.10.2/lib/autoprefixer-rails/processor.rb:153:in `runtime'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/autoprefixer-rails-9.4.10.2/lib/autoprefixer-rails/processor.rb:36:in `process'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/autoprefixer-rails-9.4.10.2/lib/autoprefixer-rails/sprockets.rb:20:in `run'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/autoprefixer-rails-9.4.10.2/lib/autoprefixer-rails/sprockets.rb:14:in `call'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/bundle.rb:23:in `block in call'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/utils.rb:200:in `dfs'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/bundle.rb:24:in `call'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:66:in `find_asset'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:134:in `block in find'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:133:in `each'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:133:in `find'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:186:in `compile'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-rails-3.2.2/lib/sprockets/rails/task.rb:67:in `block (3 levels) in define'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-3.7.2/lib/rake/sprocketstask.rb:147:in `with_logger'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/sprockets-rails-3.2.2/lib/sprockets/rails/task.rb:66:in `block (2 levels) in define'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `block in execute'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `each'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `execute'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:199:in `invoke_with_call_chain'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:188:in `invoke'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:160:in `invoke_task'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block (2 levels) in top_level'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `each'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block in top_level'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:125:in `run_with_threads'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:110:in `top_level'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:83:in `block in run'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:186:in `standard_exception_handling'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:80:in `run'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/rake-13.0.3/exe/rake:27:in `<top (required)>'
/Users/vr/.rbenv/versions/2.6.6/bin/rake:23:in `load'
/Users/vr/.rbenv/versions/2.6.6/bin/rake:23:in `<top (required)>'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in `load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in `kernel_load'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:28:in `run'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:463:in `exec'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:27:in `dispatch'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/cli.rb:18:in `start'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/exe/bundle:30:in `block in <top (required)>'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/lib/bundler/friendly_errors.rb:124:in `with_friendly_errors'
/Users/vr/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/bundler-1.17.3/exe/bundle:22:in `<top (required)>'
/Users/vr/.rbenv/versions/2.6.6/bin/bundle:23:in `load'
/Users/vr/.rbenv/versions/2.6.6/bin/bundle:23:in `<main>'

With 2.7.0 everything is working fine.

[mamhoff]

This is related to using Ruby < 2.7. If you must stay on Ruby 2.6 or earlier, you probably need to stay on execjs < 2.8. The other option is to upgrade to Ruby 2.7 or above. Adding this here for posterity and anyone else running into that rough error message :)

Two solutions:

1. Upgrade to Ruby 2.7 or later
2. Downgrade to execjs 2.7 or earlier.

[marie-bnl]

Well I use ruby 2.7.3

Traceback

Configuration file: /home/---/Documents/colabois.fr/_config.yml
            Source: /home/---/Documents/colabois.fr
       Destination: /home/---/Documents/colabois.fr/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
                    ------------------------------------------------
      Jekyll 4.2.0   Please append `--trace` to the `build` command 
                     for any additional information or backtrace. 
                    ------------------------------------------------
Traceback (most recent call last):
        43: from /home/---/.rvm/gems/ruby-2.7.3/bin/ruby_executable_hooks:22:in `<main>'
        42: from /home/---/.rvm/gems/ruby-2.7.3/bin/ruby_executable_hooks:22:in `eval'
        41: from /home/---/.rvm/gems/ruby-2.7.3/bin/jekyll:23:in `<main>'
        40: from /home/---/.rvm/gems/ruby-2.7.3/bin/jekyll:23:in `load'
        39: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/exe/jekyll:15:in `<top (required)>'
        38: from /home/---/.rvm/gems/ruby-2.7.3/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
        37: from /home/---/.rvm/gems/ruby-2.7.3/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
        36: from /home/---/.rvm/gems/ruby-2.7.3/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
        35: from /home/---/.rvm/gems/ruby-2.7.3/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
        34: from /home/---/.rvm/gems/ruby-2.7.3/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
        33: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:18:in `block (2 levels) in init_with_program'
        32: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
        31: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `each'
        30: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
        29: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:36:in `process'
        28: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:65:in `build'
        27: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/command.rb:28:in `process_site'
        26: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/site.rb:82:in `process'
        25: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/site.rb:234:in `write'
        24: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/hooks.rb:102:in `trigger'
        23: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/hooks.rb:102:in `each'
        22: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-4.2.0/lib/jekyll/hooks.rb:103:in `block in trigger'
        21: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-autoprefixer-1.0.2/lib/jekyll-autoprefixer.rb:24:in `block in <top (required)>'
        20: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:20:in `process'
        19: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:20:in `each'
        18: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:23:in `block in process'
        17: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:23:in `open'
        16: from /home/---/.rvm/gems/ruby-2.7.3/gems/jekyll-autoprefixer-1.0.2/lib/jekyll/autoprefixer/autoprefixer.rb:27:in `block (2 levels) in process'
        15: from /home/---/.rvm/gems/ruby-2.7.3/gems/autoprefixer-rails-9.8.6.5/lib/autoprefixer-rails.rb:16:in `process'
        14: from /home/---/.rvm/gems/ruby-2.7.3/gems/autoprefixer-rails-9.8.6.5/lib/autoprefixer-rails/processor.rb:53:in `process'
        13: from /home/---/.rvm/gems/ruby-2.7.3/gems/autoprefixer-rails-9.8.6.5/lib/autoprefixer-rails/processor.rb:170:in `runtime'
        12: from /home/---/.rvm/gems/ruby-2.7.3/gems/execjs-2.8.0/lib/execjs/runtime.rb:64:in `eval'
        11: from /home/---/.rvm/gems/ruby-2.7.3/gems/execjs-2.8.0/lib/execjs/external_runtime.rb:21:in `eval'
        10: from /home/---/.rvm/gems/ruby-2.7.3/gems/execjs-2.8.0/lib/execjs/external_runtime.rb:39:in `exec'
         9: from Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
         8: from Function.Module._load (node:internal/modules/cjs/loader:829:14)
         7: from Module.load (node:internal/modules/cjs/loader:989:32)
         6: from Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
         5: from Module._compile (node:internal/modules/cjs/loader:1109:14)
         4: from Object.<anonymous> ((execjs):1:58)
         3: from (execjs):1:40
         2: from (execjs):16:14
         1: from (execjs):1:213
eval (eval at <anonymous> ((execjs):1:213), <anonymous>:1:10): TypeError: Cannot read property 'version' of undefined (ExecJS::ProgramError)

[mbiang]

This is occurring for me as well on Ruby 2.7.3. Pinning execjs to 2.7.0 fixes the issue.

[ken-wong]

I use ruby 3.0.1 on Ubuntu, and execjs 2.8.0 raise errors too.

      01 ExecJS::ProgramError: TypeError: Cannot read property 'version' of undefined
      01 eval (eval at <anonymous> ((execjs):1:213), <anonymous>:1:10)
      01 (execjs):1:213
      01 (execjs):16:14
      01 (execjs):1:40
      01 Object.<anonymous> ((execjs):1:58)
      01 Module._compile (node:internal/modules/cjs/loader:1109:14)
      01 Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
      01 Module.load (node:internal/modules/cjs/loader:989:32)
      01 Function.Module._load (node:internal/modules/cjs/loader:829:14)

[kwent]

Same ruby 2.7.3.

[igorkasyanchuk]

I've the same issue with ruby 3.0

[terryyin]

Same here for ruby 3.0.1. Rails precompile assets failed.

[SteveW94]

Expirience the same error on ruby 3.0.1 with this release.
ExecJS 2.7.0 works fine.

[PedroAugustoRamalhoDuarte]

Same error in 2.7.2

[casperisfine]

The problem is that autoprefixer tries to detect the node version: ai/autoprefixer-rails#203

A long time ago process was removed to ensure all runtimes could be swappable: b0be19c

Let's try to find a solution with autoprefixer, I don't think this version check is the way to go.