$ apm -v
internal/child_process.js:323
throw errnoException(err, 'spawn');
^

Error: spawn UNKNOWN
at _errnoException (util.js:1024:11)
at ChildProcess.spawn (internal/child_process.js:323:11)
at exports.spawn (child_process.js:502:9)
at EventEmitter.<anonymous> (C:\Users\<username>\AppData\Local\atom\app-1.34.0\resources\app\apm\lib\apm-cli.js:169:17)
at _combinedTickCallback (internal/process/next_tick.js:131:7)
at process._tickCallback (internal/process/next_tick.js:180:9)

しかし、apm listコマンドは問題なく実行できる。

$ apm list
Built-in Atom Packages (93)
├── atom-dark-syntax@0.29.1
├── atom-dark-ui@0.53.3
├── atom-light-syntax@0.29.1
├── atom-light-ui@0.46.3
├── base16-tomorrow-dark-theme@1.6.0
├── base16-tomorrow-light-theme@1.6.0
├── one-dark-ui@1.12.5
├── one-light-ui@1.12.5
├── one-dark-syntax@1.8.4
├── one-light-syntax@1.8.4
├── solarized-dark-syntax@1.3.0
├── solarized-light-syntax@1.3.0
├── about@1.9.1
├── archive-view@0.65.1
├── autocomplete-atom-api@0.10.7
├── autocomplete-css@0.17.5
├── autocomplete-html@0.8.8
├── autocomplete-plus@2.42.0
├── autocomplete-snippets@1.12.0
├── autoflow@0.29.4
├── autosave@0.24.6
├── background-tips@0.28.0
├── bookmarks@0.45.1
├── bracket-matcher@0.90.4
├── command-palette@0.43.5
├── dalek@0.2.2
├── deprecation-cop@0.56.9
├── dev-live-reload@0.48.1
├── encoding-selector@0.23.9
├── exception-reporting@0.43.1
├── find-and-replace@0.215.14
├── fuzzy-finder@1.8.2
├── github@0.23.3
├── git-diff@1.3.9
├── go-to-line@0.33.0
├── grammar-selector@0.50.1
├── image-view@0.63.1
├── incompatible-packages@0.27.3
├── keybinding-resolver@0.38.4
├── line-ending-selector@0.7.7
├── link@0.31.6
├── markdown-preview@0.159.25
├── metrics@1.6.2
├── notifications@0.70.5
├── open-on-github@1.3.1
├── package-generator@1.3.0
├── settings-view@0.257.2
├── snippets@1.4.0
├── spell-check@0.74.2
├── status-bar@1.8.15
├── styleguide@0.49.12
├── symbols-view@0.118.2
├── tabs@0.109.2
├── timecop@0.36.2
├── tree-view@0.224.5 (disabled)
├── update-package-dependencies@0.13.1
├── welcome@0.36.7
├── whitespace@0.37.7
├── wrap-guide@0.40.3
├── language-c@0.60.14
├── language-clojure@0.22.7
├── language-coffee-script@0.49.3
├── language-csharp@1.1.0
├── language-css@0.43.0
├── language-gfm@0.90.6
├── language-git@0.19.1
├── language-go@0.46.6
├── language-html@0.51.5
├── language-hyperlink@0.17.0
├── language-java@0.31.1
├── language-javascript@0.129.19
├── language-json@0.19.2
├── language-less@0.34.3
├── language-make@0.23.0
├── language-mustache@0.14.5
├── language-objective-c@0.15.1
├── language-perl@0.38.1
├── language-php@0.44.1
├── language-property-list@0.9.1
├── language-python@0.51.8
├── language-ruby@0.72.14
├── language-ruby-on-rails@0.25.3
├── language-rust-bundled@0.1.0
├── language-sass@0.62.0
├── language-shellscript@0.27.9
├── language-source@0.9.0
├── language-sql@0.25.10
├── language-text@0.7.4
├── language-todo@0.29.4
├── language-toml@0.18.2
├── language-typescript@0.4.11
├── language-xml@0.35.3
└── language-yaml@0.32.0

Community Packages (2) C:\Users\j001395\.atom\packages
├── japanese-menu@1.14.0
└── platformio-atom-ide-terminal