The canonical tag refers to the URL of another page / canonical multiple

This error occurs when a canonical tag is detected on the article page, that doesn’t refer to the article URL itself. The canonical tag tells Google whether the page should be considered original or not, which is why it can never refer to a different URL than the one of the article it’s applied on. Please remove any canonical tag that refers to a different URL. If you don’t see a canonical tag referring to a different URL on your article, please contact our support team.