Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
A slash was not immediately followed by “>”.
Attribute “crash” not allowed on element “input” at this point.
Attribute “course"” not allowed on element “input” at this point.
Attribute “[book” not allowed on element “input” at this point.
Attribute “video” not allowed on element “input” at this point.
Attribute “audio]"” not allowed on element “input” at this point.
Duplicate attribute “alt”.
Duplicate ID “inf_field_FirstName”.
Duplicate ID “inf_field_LastName”.
Duplicate ID “inf_field_Email”.
Bad value “foobox” for attribute “rel” on element “a”: The string “foobox” is not a registered keyword.
Bad value “fooboxvid” for attribute “rel” on element “a”: The string “fooboxvid” is not a registered keyword.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Attribute “course"” is not serializable as XML 1.0.
Attribute “[book” is not serializable as XML 1.0.
Attribute “audio]"” is not serializable as XML 1.0.
The first occurrence of ID “inf_field_FirstName” was here.
The first occurrence of ID “inf_field_LastName” was here.
The first occurrence of ID “inf_field_Email” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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