validation error

I started validating my website. The first line, which is a warning, 
states that I need to declare a language. This is the first line of my 
index page.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"
   "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" *xml:lang="en"*>

I do believe language is declared. is it not?

Apparently I have a number of errors. But one at a time.

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Received on Tuesday, 8 October 2019 08:13:20 UTC