WC3 Markup Validation Service

bonjour,
Voila je souhaiterai passer la validation WC mais je n'arrive pas a comprendre mes erreurs.
Mais quelle fichier dois je modifier ?

Validation Output: 2 Errors
1. Warning Line 429, Column 1: unclosed end-tag requires SHORTTAG YES
<div>
2. Error Line 429, Column 1: end tag for element "div" which is not open
<div>
3. Error Line 432, Column 7: end tag for "body" omitted, but OMITTAG NO was specified
</html>