после проверки сайта W3C validators не могу исправить ошибку
 

как исправить и где находится 804 линиявот текст ошибки Sorry, I am unable to validate this document because on line 804 it contained one or more bytes that I cannot interpret as utf-8 (in other words, the bytes found are not valid values in the specified Character Encoding). Please check both the content of the file and the character encoding indication. The error was: utf8 "\xAC" does not map to Unicode