"Undefined" element showing on Pingdom tests

[Clare]

Clare

April 2, 2015 at 2:40 am

On two of my sites I am seeing an error on Pingdom tests which is zero bytes, but taking around 2 seconds to load. It has no definable root on the site, it just shows as “/undefined” after whatever link I look at, and it takes me to a 404 page.

What’s strange is that it’s only appearing on two of my five sites, all of them are on the most recent version of the theme (3.0.1) and have mostly the same plugins installed. There’s none installed on the those two, which aren’t also on the others. The only difference is that these two sites have child themes active, so would that cause an issue?

It doesn’t seem to affect my sites in anyway, but I’d still like to resolve it since it’s adding two full seconds to the load time of every page.

Any help would be appricated

Thanks