403 Forbidden on all api docs

When i try to search for an api reference on google i get this error. For example pages like
UBTTaskNode::FinishLatentTask | Unreal Engine Documentation,
UBTTaskNode | Unreal Engine Documentation,
and many more related to c++ api give this error. i tried replacing the docs.unrealengine with api.unrealengine but still get this error and a yesterday everything were working fine.
Does anyone have a solution for this problem or at least the reason that this is happening.
Thank you.