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.
Saw “<” when expecting an attribute name. Probable cause: Missing “>” immediately before.
A slash was not immediately followed by “>”.
Attribute “<” not allowed on element “a” at this point.
Attribute “a” not allowed on element “a” at this point.
Attribute “nopin” not allowed on element “img” at this point.
Bad value “false noopener” for attribute “rel” on element “a”: The string “false” is not a registered keyword.
Bad value “100%” for attribute “width” on element “img”: Expected a digit 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.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “_blank"” not allowed on element “a” at this point.
Duplicate ID “s”.
Warnings:
Attribute “<” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
Attribute “_blank"” is not serializable as XML 1.0.
The first occurrence of ID “s” was here.
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