Common alias for root of domain returns a error

Rule from seo under content category

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The canonical link contains an error. This means the url given in the href attribute inside of the<link rel="canonical" element has returned an error. The web address is not valid and could not viewed correctly.

    <title>Example Page</title>
    <link rel="canonical" href=""/>

How do I fix this ?

Make sure there are no spelling mistakes in the url and that you can view it in your web browser. If your web server is set to redirect to a different url, we expect an OK 200 code from that web address.


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