Errors:
Attribute “xmlns:fb” not allowed here.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Start tag “head” seen but an element of the same type was already open.
Attribute “src-orig” not allowed on element “img” at this point.
Bad value “main_” for attribute “role” on element “main”.
End tag “br”.
The “center” element is obsolete. Use CSS instead.
Attribute “type” not allowed on element “iframe” at this point.
Bad value “true” for attribute “allowfullscreen” on element “iframe”.
End tag “center” seen, but there were open elements.
Unclosed element “header”.
Stray end tag “header”.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
No “p” element in scope but a “p” end tag seen.
Duplicate ID “primary”.
Stray end tag “hr”.
End tag “div” seen, but there were open elements.
Unclosed element “center”.
Unclosed element “main”.
Bad value “generator” for attribute “rel” on element “a”: The string “generator” is not a registered keyword.
Duplicate ID “fb-root”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
The “aria-controls” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “primary” was here.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “fb-root” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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