Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “nl_NL” for attribute “hreflang” on element “link”: The language subtag “nl_nl” is not a valid language subtag.
Bad value “nl_BE” for attribute “hreflang” on element “link”: The language subtag “nl_be” is not a valid language subtag.
Bad value “fr_BE” for attribute “hreflang” on element “link”: The language subtag “fr_be” is not a valid language subtag.
Bad value “de_DE” for attribute “hreflang” on element “link”: The language subtag “de_de” is not a valid language subtag.
Bad value “fr_FR” for attribute “hreflang” on element “link”: The language subtag “fr_fr” is not a valid language subtag.
Bad value “es_ES” for attribute “hreflang” on element “link”: The language subtag “es_es” is not a valid language subtag.
Bad value “de_AT” for attribute “hreflang” on element “link”: The language subtag “de_at” is not a valid language subtag.
Bad value “en_GB” for attribute “hreflang” on element “link”: The language subtag “en_gb” is not a valid language subtag.
Bad value “en_US” for attribute “hreflang” on element “link”: The language subtag “en_us” is not a valid language subtag.
The “select” element cannot have more than one selected “option” descendant unless the “multiple” attribute is specified.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Start tag “a” seen but an element of the same type was already open.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “/vietnam>visum Vietnam</a>, <a href = ” for attribute “href” on element “a”: Illegal character in path segment: “>” is not allowed.
Attribute “rusland"” not allowed on element “a” at this point.
End tag “br”.
Warnings:
Attribute “rusland"” is not serializable as XML 1.0.
Netherlands NL