エラー

インストール時

error An unexpected error occurred: "https://registry.yarnpkg.com/@material-ui/core/-/core-4.9.2.tgz: read ECONNRESET".

yarn install --network-timeout 1000000000                                                                                                              
# yarn install v1.17.0
# [1/4] 🔍  Resolving packages...
# [2/4] 🚚  Fetching packages...
# info There appears to be trouble with your network connection. Retrying...
# info There appears to be trouble with your network connection. Retrying...
# info There appears to be trouble with your network connection. Retrying...
# info There appears to be trouble with your network connection. Retrying...
# error An unexpected error occurred: "https://registry.yarnpkg.com/@material-ui/core/-/core-4.9.2.tgz: read ECONNRESET".
# info If you think this is a bug, please open a bug report with the information provided in "/Users/nju33/github/nju33/figma-tailwindcss/yarn-error.log".
# info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
# info There appears to be trouble with your network connection. Retrying...
# info There appears to be trouble with your network connection. Retrying...
# info There appears to be trouble with your network connection. Retrying...
# info There appears to be trouble with your network connection. Retrying...

brew upgrade yarnなど試しましたが結局治らず、結果的に再起動したら治りました🙄