Errors:
Attribute “itemprop” not allowed on element “link” at this point.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Attribute “target” not allowed on element “button” at this point.
No “p” element in scope but a “p” end tag seen.
End tag “header” seen, but there were open elements.
Unclosed element “div”.
Duplicate ID “model-register”.
Element “meta” is missing required attribute “content”.
Attribute “content” not allowed on element “span” at this point.
Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “content” not allowed on element “div” at this point.
Duplicate ID “participantusername_{thread.user.id}}”.
The “aria-labelledby” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “model-register” was here.
The first occurrence of ID “participantusername_{thread.user.id}}” was here.
The value of attribute “title” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The value of attribute “alt” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
Text run is not in Unicode Normalization Form C.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
This document appears to be written in Arabic. Consider adding “dir="rtl"” to the “html” start tag.
Egypt EG