Google Guava Core Libraries are deprecated

com.google.common.collect : The Google Guava Core Libraries are deprecated and will not be part of the AEM SDK after April 2023 Deprecated since 2022-12-01 For removal : 2023-04-01 (com.adobe.aem.guides.wkndapp:wknd-app.all:1.0.0-SNAPSHOT)

How to install yarn

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.

+ yarn install

+ ~~~~

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

    + FullyQualifiedErrorId : CommandNotFoundException

Install Yarn using npm or installer

There are two ways to install yran in development machine.

Install yarn using npm

npm install --global yarn

Install yarn using installer

We could download the installer file and install in the machine. link to download >> https://classic.yarnpkg.com/latest.msi

Reference

https://classic.yarnpkg.com/lang/en/docs/install

Alternate of Postman tool

Use VS code, Thunder Client extension as an alternative of Postman tool.

1. Install VS code

2. Click on the extension icon from left rail. And search for the Thunder Client.

3. Click on Install button of Thunder Client. It will take few seconds to install. After successful installation an icon on Thunder Client get added below the extension icon or left navigation.

4. Click on Thunder Client Icon it will open a Thunder Client window.
    

5. Now click on New Request and fill the detail of endpoint and execute.

6. You could also import your collections by clicking on the option icon under collection tab.