Enabled clean URLs and got this response:
We made a test request to URL and got the following result.
It means that your SEO-friendly URLs may not work properly after enabling.
Error code explanation
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I just checked C panel. There is no Environment section described in article adn there is no httpd.conf file there
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I still don't understand what server has to do with internal links? If part address is
http://www.cardacc.com/at-erc-card.html
how that can go wrong