title: Why and how to solve SharedArrayBuffer warning in my react-app
body: <p>My React-app has <code>axios</code> (dependency) and <code>json-server</code> (dev-dependency) insatlled, after I did this, <em>my react-app started throwing the following warning message</em>:
  <br></p>
  <blockquote>
  <p><strong><code>[Deprecation] SharedArrayBuffer will require cross-origin isolation as of M91, around May 2021.</code></strong></p>
  </blockquote>
  <br>
  What is this, how do i resolve the error and why is this happening?
  <br><br>
  I'm a beginner in the filed and the link provided in the error is using high-level language which I cannot understand, [this](https://developer.chrome.com/blog/enabling-shared-array-buffer/) is the link provided in the console. 
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