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How I can get server side includes SSI work on my site (not shown anything, even with the error message)?

I desperate! I put the HTML code. Include files in my public_html directory and added the desired text (AddType text / html. Shtml AddHandler server-parsed. Options Indexes FollowSymLinks Includes shtml) to the top of me. htaccess file (above what already exists). This is the HTML that tivier.ipower.com/index3.html used: charset = windows-1252 "> href="mystyle.css" rel=stylesheet>