Incorrect integrity when fetching from the cache

Question

When running yarn add --dev jest, I got error Incorrect integrity when fetching from the cache.

Full output:

Answer 1

For anyone who is working with heroku and sees this error:

• install heroku cli
• login via heroku login
• heroku plugins:install heroku-repo
• heroku repo:purge_cache -a $YOURAPPNAME

then do a manual rebuild