[Solved] w3 validation changes

[cassandra8]

Hi-

I was wondering if anybody else is having this problem. I had my shop 100% free of errors on the w3 markup validation for months. I just checked again and am now getting this error for all the product pages.

 

"bad value for attribute rel on element a: the string is not a registered keyword."

 

Any idea on how to fix? I don't understand why this started to show up when everything was going so smoothly. 

 

Edited August 31, 2016 by cassandra8 (see edit history)

[cassandra8]

I solved it. I went to the module in the back office that cleans data and this solved my error problem. worked like a charm. Only do the registry cleaning only. Not the first two...