Changing language in html by a href

I am trying to direct the user by pressing the English icon of my site to the English version of the site that I cloned. To do that I did:

<div id="header" class="container">
        <a href="../English_version/indexEN.html" lang="en-en" hreflang="en-en"><img src="images/English_language.png" alt="in English" width="70" height="70"></a>

But the issue is when I press the icon says "It may have been moved or deleted"

I hope I gave full details of my issue.

Thank you.