This is another mistake I am seeing more and more where developers try to combine the canonical and the self-referencing hreflang element into a single tag. In this case, it was the page for Ireland English.
<link rel=”Canonical” hreflang=”en-IE” href=”https://www.mysite.com/ie/”/>
<link rel=”alternate” hreflang=”es-AR” href=”http://www.mysite.com/ar/”/>
Clarification: The rel=canonical must be its one entity as must the hreflang element for the page. You cannot combine them under any conditions. A correct entry would look like the code below.
<link rel=”canonical” href=” https://www.mysite.com/ie/”/>
<link rel=”alternate” hreflang=”en-IE” href=”https://www.mysite.com/ie/”/>
<link rel=”alternate” hreflang=”es-AR” href=”http://www.mysite.com/ar/”/>
