開発環境でも起こって何かしたはずなんだけど思い出せない。。。
yarn install v1.6.0
[1/6] Validating package.json...
[2/6] Resolving packages...
success Already up-to-date.
Done in 2.44s.
Webpacker is installed ? ?
Using /mastodon/config/webpacker.yml file for setting up webpack paths
Rendering errors/500.html.haml within layouts/error
Rendered errors/500.html.haml within layouts/error (1398.6ms)
r