Do not use server-side image maps

How to fix this issue?

Remove the ismap attribute from <img> elements. Replace server-side image maps with one of these accessible alternatives:

<a href="/map-handler">
  <img src="map.png" ismap alt="Product categories" />
</a>

Use a client-side image map with <map> and <area> elements instead:

<img src="map.png" alt="Product categories" usemap="#category-map" />
<map name="category-map">
  <area shape="rect" coords="0,0,100,100" href="/electronics" alt="Electronics" />
  <area shape="rect" coords="100,0,200,100" href="/clothing" alt="Clothing" />
</map>

Or replace the image map with regular links or buttons arranged visually to match the design:

<nav aria-label="Product categories">
  <a href="/electronics">Electronics</a>
  <a href="/clothing">Clothing</a>
</nav>

Why is this important?

A server-side image map requires a pointing device to determine which area was clicked. Keyboard users cannot activate areas of a server-side image map. This makes the navigation completely inaccessible to people with motor disabilities or anyone using a keyboard.