Error reported when creating Vue item: error command failed: Yarn

Solution 1: Win + R enter CMD to enter the command line interface

Enter command

npm install -g yarn

After success, the problem can be solved by re creating vue-cli4 project.

Solution 2:

Enter C:/users/administrator/in the windows environment

There is a file. Vuerc

Open this file to display

{
  "useTaobaoRegistry": true,
  "packageManager": "yarn"
}

Just manually change the configuration content yarn to NPM to change the package manager when the project is created

Solution 3:

Delete the. Vuerc file. When you create a Vue project for the first time, you will be prompted to select the configuration, and then select NPM