There is a WP Lightbox 2 plugin for WordPress, and it turns out that the validator swears at rel="lightbox[2]" (the plugin adds).

 <a href="/wp-content/uploads/2014/11/7.jpg" rel="lightbox[2]"> <img class="alignleft wp-image-105 size-medium" src="/wp-content/uploads/2014/11/7-300x225.jpg" alt="7" width="300" height="225"> </a>

The type that a lot of them, and the values (rel="") should be different.

Maybe someone knows another plugin, an alternative / solution to the problem?

    1 answer 1

    Drive in, the validator is not true in the last resort, and it should be applied wisely, this error is a trifle. Or change the plugin to the one whose activation attribute contains data-.