Github user 1ambda commented on the issue: https://github.com/apache/zeppelin/pull/1812 @Leemoonsoo 1. `yarn remove` and `yarn add` will update package.json as well. 2. But some people might not know how to use yarn, so it would be better to - remove `yarn.lock` from git - run `yarn install --no-lockfile` (don't read, generate lock file)
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