'Yarn' is not recognized as an internal or external command React Native error Solved with example

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 add @react-native-google-signin/google-signin ~~~~ CategoryInfo : ObjectNotFound: (yarn:String) [], CommandNotFoundException FullyQualifiedErrorId : CommandNotFoundException 'Yarn' is not recognized as an internal or external command React Native React js Node js Express js Next js Gatsby