Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Attribute “)” is not serializable as XML 1.0.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Attribute “http:” is not serializable as XML 1.0.
Attribute “2000” is not serializable as XML 1.0.
Attribute “svg"” is not serializable as XML 1.0.
The first occurrence of ID “popup-message” was here.
Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “title” not allowed as child of element “head” in this context. (Suppressing further errors from this subtree.)
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
Attribute “)” not allowed on element “div” at this point.
Element “script” must not have attribute “defer” unless attribute “src” is also specified.
Bad value “true” for attribute “autofocus” on element “input”.
No space between attributes.
A slash was not immediately followed by “>”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “http:” not allowed on element “svg” at this point.
Attribute “www.w3.org” not allowed on element “svg” at this point.
Attribute “2000” not allowed on element “svg” at this point.
Attribute “svg"” not allowed on element “svg” at this point.
Stray end tag “div”.
Duplicate ID “popup-message”.
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