Errors:
Attribute “xmlns:fb” not allowed here.
Bad value “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
Attribute “http-equiv” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Element “style” not allowed as child of element “noscript” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “role”.
Attribute “pagespeed_no_defer” not allowed on element “script” at this point.
Attribute “pagespeed_lazy_src” not allowed on element “img” at this point.
Bad value “http://events.ucl.ac.uk/event/{http://www.columbasystems.com/customers/ucl/gpp/eventid/}j188-j8a7019x-wbsl2w” for attribute “href” on element “a”: Illegal character in path segment: “{” is not allowed.
Bad value “http://events.ucl.ac.uk/event/{http://www.columbasystems.com/customers/ucl/gpp/eventid/}t1ga-j9fv4i71-gbygsl” for attribute “href” on element “a”: Illegal character in path segment: “{” is not allowed.
Bad value “http://events.ucl.ac.uk/event/{http://www.columbasystems.com/customers/ucl/gpp/eventid/}p1a4-j8kaustk-ja1w1a” for attribute “href” on element “a”: Illegal character in path segment: “{” is not allowed.
Duplicate ID “social”.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “social” 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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