Hello!
The site has the Site Kit plugin installed. Until January 10, everything worked. Afterwards, the plugin started showing the error Invalid JSON response. Nothing was done on our part, no plugins were installed, no technical changes were made. I contacted the technical support of my hosting and received an answer that nothing had been done on their hosting either. But they sent the following information:
I ran a check from your server using the information from the page above:
root@sfdfda160:/# curl -4 -I https://sitekit.withgoogle.com
HTTP/2 200
content-type: text/html
vary: Accept-Encoding
x-cloud-trace-context: d169570248406375ef19a68d4b98ddbb
date: Tue, 16 Jan 2024 23:52:03 GMT
server: Google Frontend
alt-svc: h3=”:443″; ma=2592000,h3-29=”:443″; ma=2592000
root@sfdfda160:/#
The connection using the IPv4 protocol is successful, as evidenced by the response code 200 in the line:
HTTP/2 200
root@sfdfda160:/# curl -6 -I https://sitekit.withgoogle.com
HTTP/2 403
alt-svc: h3=”:443″; ma=2592000,h3-29=”:443″; ma=2592000
root@sfdfda160:/#
Using the IPv6 protocol, the Google service blocks the request, as indicated by the response code 403. Thus, unfortunately, the problem is that Google is blocking the IPv6 address of your server or the entire IPv6 subnet.
What to do in this situation? Other sites also began to be blocked.
The page I need help with: [log in to see the link]