Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “video/mp4; codecs=avc1.42E01E,mp4a.40.2” for attribute “type” on element “source”: Expected a token character, whitespace or a semicolon but saw “,” instead.
Bad value “” for attribute “src” on element “source”: Must be non-empty.
Bad value “video/webm; codecs=vp8,vorbis” for attribute “type” on element “source”: Expected a token character, whitespace or a semicolon but saw “,” instead.
Bad value “video/ogg; codecs=theora,vorbis” for attribute “type” on element “source”: Expected a token character, whitespace or a semicolon but saw “,” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “id” on element “section”: An ID must not be the empty string.
Duplicate attribute “class”.
Bad value “34px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “34px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Attribute “addthis:url” not allowed on element “div” at this point.
Attribute “addthis:title” not allowed on element “div” at this point.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Bad value “” for attribute “method” on element “form”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute “addthis:url” is not serializable as XML 1.0.
Attribute “addthis:title” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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