Erro status 12 webhook

We currently have a problem where we accept error 12 in the webhook response.

Attached is an image with the return of the message that we accepted, we consulted several pages on the Zoom forum, but were unsuccessful, can you help us with these problems we are facing?

We noticed that error 12 occurred after we unblocked some of the Zoom links in our firewall, however, after performing this unblocking this error occurs inconsistently, but when it occurs we are unable to use the webhooks temporarily.