posts not indexed with wp statistics?

My posts usually get indexed with no problems but I have over 20 that haven’t been indexed. When I have had a look, the URL looks really odd. It has my website address and then wp-json/wp-statistics/v2/hit? after it, followed by a load of code.
It isn’t what my URL is on my post.

When I click on the link, it comes up with this:

{“code”:”rest_cookie_invalid_nonce”,”message”:”Cookie check failed”,”data”:{“status”:403}}

Can anyone help me? I am not very computer literate, so don’t understand what it going on.
all my other posts have indexed fine and have the URL that I have given them, so I have no idea what’s happening.
Thanks