Warnings:
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “” 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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “alt” not allowed on element “a” at this point.
Duplicate attribute “id”.
No “p” element in scope but a “p” end tag seen.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Attribute “align” not allowed on element “span” at this point.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “/afstand-zonnepanelen-berekenen-plat-dak/"” for attribute “href” on element “a”: Illegal character in path segment: “"” is not allowed.
Bad value “” for attribute “id” on element “input”: An ID must not be the empty string.
Duplicate ID “”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
The “aria-controls” attribute must point to an element in the same document.
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