yarn fail

[MPABITRA]

When i installed yarn faced error

yarn : The term 'yarn' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1

• yarn version

•   + CategoryInfo          : ObjectNotFound: (yarn:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException