yarn启动包括下载有写命令报错404 例如:yarn create umi,具体报错信息
G:\>tyarn create umi
yarn create v1.17.3
[1/4] Resolving packages...
[2/4] Fetching packages...
error An unexpected error occurred: "https://registry.yarnpkg.com/flatmap-stream/-/flatmap-stream-0.1.0.tgz: Request failed \"404 Not Found\"".
info If you think this is a bug, please open a bug report with the information provided in "C:\\Users\\Lenovo\\AppData\\Local\\Yarn\\Data\\global\\yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/create for documentation about this command.
且umi已经用cnpm下载完成了,之前用yarn也下载不下来
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