[www-validator] <none>

Could you please help me with the problem I am having validating my website?  The site's http is: http://members.cox.net/polhamus2/index.html

I get the following error and I do not know how to correct it:
"unable to validate this document because line 47 contained one or more bytes that cannot be interpreted as utf-8 (bytes found are not valid values in the specified Character Encoding) .  Please contact me at:
mpolhamu@yahoo.com