Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “navigation” role is unnecessary for element “nav”.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “typeahead” was here.
The “main” role is unnecessary for element “main”.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Errors:
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Any “input” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.
Duplicate ID “typeahead”.
Saw a “form” start tag, but there was already an active “form” element. Nested forms are not allowed. Ignoring the tag.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Stray end tag “form”.
Bad value “Wed, Dec 20 - Sun, Dec 24, 2017” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “/calendar?genre=Broadway & Musical Theater” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “Wed, Dec 20, 2017” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “/calendar?genre=Live Music” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “Fri, Dec 29 - Sat, Dec 30, 2017” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “Sun, Dec 31, 2017” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Element “h4” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “for” attribute of the “label” element must refer to a non-hidden form control.
The “aria-controls” attribute must point to an element in the same document.
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