The href attribute requires a valid value to be accessible. Provide a valid, navigable address as the href value. If you cannot provide a valid href, but still need the element to resemble a link, code example
Example: 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/"