Safari can't connect to the server googleadservices

Only today I have noticed when I go on to shopping on google it comes up with this error for every website

This is the same for chrome also

I have done a full virus scan and it said my laptop was clean and absolutely everything else on my laptop is working fine. I had adblocker but I have uninstalled that extension now and still having the same problem. Does anyone know why it is doing this and how to resolve this please?