The “name” attribute is never allowed on the “param” element.

The name attribute is reported on the <param> element because <param> itself is obsolete in the HTML standard.

<param> used to sit inside <object> to pass named values to plugins such as Flash, Java applets, or ActiveX controls. Each one carried a name and a value. Browsers dropped plugin support, the element was removed from the HTML specification, and the Nu validator now rejects its attributes, including name.

There is no replacement attribute to add. The fix is to delete the <param> element. If the surrounding <object> points at a resource that browsers still handle on their own, like an image or a PDF, set the data and type attributes directly on <object> and drop the parameters. If the content depended on a plugin, use a native element such as <video>, <audio>, or <iframe> instead.

Invalid example

<object data="movie.swf" type="application/x-shockwave-flash">
  <param name="autoplay" value="true">
</object>

Valid example

<video src="movie.mp4" autoplay controls></video>

Learn more:

MDN Reference

HTML param element - MDN

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MDN Reference

HTML object element - MDN

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