Citation:
Error Line 5 column 74: character data is not allowed here.
..." content="text/html; charset=ISO-8859-15"/>
You have used character data somewhere it is not permitted to appear. Mistakes that can cause this error include putting text directly in the body of the document without wrapping it in a container element (such as a <p>aragraph</p>) or forgetting to quote an attribute value (where characters such as "%" and "/" are common, but cannot appear without surrounding quotes).
Quand je retire le /, sa valide bien... et j'ai le même problème avec ma balise link...