title: Neither ANDROID_HOME nor ANDROID_SDK_ROOT environment variable was exported - Windows10
body: <p>I am a beginner and learning appium tool.</p>
  <p>Trying to start the appium session and getting an error</p>
  <p><code>An unknown server-side error occurred while processing the command. Original error: Neither ANDROID_HOME nor ANDROID_SDK_ROOT environment variable was exported</code></p>
  <p>Using Window 10.</p>
  <p><a href="https://i.stack.imgur.com/7Irqm.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7Irqm.png" alt="enter image description here" /></a></p>