Errors:
Attribute “xmlns:article” not allowed here.
Attribute “xmlns:book” not allowed here.
Attribute “xmlns:product” not allowed here.
Attribute “xmlns:profile” not allowed here.
Attribute “xmlns:video” not allowed here.
Duplicate attribute “class”.
Attribute “hreflang” not allowed on element “li” at this point.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Duplicate ID “block-nobleenergy-languageswitcher”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Attribute with the local name “xmlns:article” is not serializable as XML 1.0.
Attribute with the local name “xmlns:book” is not serializable as XML 1.0.
Attribute with the local name “xmlns:product” is not serializable as XML 1.0.
Attribute with the local name “xmlns:profile” is not serializable as XML 1.0.
Attribute with the local name “xmlns:video” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The first occurrence of ID “block-nobleenergy-languageswitcher” was here.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
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