Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “a” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “hgroup” is missing a required instance of one or more of the following child elements: “h1”, “h2”, “h3”, “h4”, “h5”, “h6”.
Attribute “pubdate” not allowed on element “time” at this point.
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “title"licentie"” not allowed on element “a” at this point.
Attribute “alt” not allowed on element “a” at this point.
Attribute “title"reacties"” not allowed on element “a” at this point.
Attribute “title"discussieer"” not allowed on element “a” at this point.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Attribute “title"licentie"” is not serializable as XML 1.0.
Attribute “title"reacties"” is not serializable as XML 1.0.
Attribute “title"discussieer"” is not serializable as XML 1.0.
The “contentinfo” role is unnecessary for element “footer”.
Netherlands NL