Answers for "The href attribute is required for an anchor to be keyboard accessible."

he href attribute is required for an anchor to be keyboard accessible

<a href="javascript:void(0)">link</a>

React site warning: The href attribute requires a valid address. Provide a valid, navigable address as the href value jsx-a11y/anchor-is-valid

// just change 
href="#" // -> to correct url 
Example: 
href="https://learn-tech-tips.blogspot.com/"

The href attribute is required for an anchor to be keyboard accessible.

href="/#" to replace href="#"