Errors:
Attribute “charset” not allowed on element “meta” at this point.
Bad value “text/html” for attribute “content” on element “meta”: The legacy encoding declaration did not start with “text/html;”.
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.
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
Duplicate ID “categoryList”.
Attribute “categoryid” not allowed on element “li” at this point.
Attribute “parentcategoryid” not allowed on element “li” at this point.
Attribute “categoryid” not allowed on element “div” at this point.
A slash was not immediately followed by “>”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “link” is missing one or more of the following attributes: “itemprop”, “property”, “rel”.
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Element “input” with attribute “type” whose value is “button” must have non-empty attribute “value”.
Bad value “/?AS_Text_autor=praca zbiorowa” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Attribute “link” not allowed on element “p” at this point.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Warnings:
The first occurrence of ID “categoryList” was here.
This document appears to be written in Polish but the “html” start tag has “lang="en"”. Consider using “lang="pl"” (or variant) instead.
Poland PL