# Real errors that should be fixed.

Bad value “” for attribute “id” on element “div”: Bad id: An ID must not be the empty string\.
Duplicate ID “[^”]*”\.
The first occurrence of ID “[^”]*” was here\.

# Warnings that are probably less important.

The “type” attribute is unnecessary for JavaScript resources\.
Section lacks heading\. Consider using “h2”-“h6” elements to add identifying headings to all sections\.