Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “online” not allowed on element “img” at this point.
Attribute “english” not allowed on element “img” at this point.
Attribute “classes""” not allowed on element “img” at this point.
Attribute “study” not allowed on element “img” at this point.
Attribute “with” not allowed on element “img” at this point.
Attribute “native” not allowed on element “img” at this point.
Attribute “speaker” not allowed on element “img” at this point.
Attribute “teachers""” not allowed on element “img” at this point.
Attribute “free” not allowed on element “img” at this point.
Attribute “lessons""” not allowed on element “img” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No “p” element in scope but a “p” end tag seen.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Warnings:
The “navigation” role is unnecessary for element “nav”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Attribute “classes""” is not serializable as XML 1.0.
Attribute “teachers""” is not serializable as XML 1.0.
Attribute “lessons""” is not serializable as XML 1.0.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “contentinfo” role is unnecessary for element “footer”.
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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