How to fix `failed to connect to host` with GitHub webhooks

I use webhook and Github webhooks to redeploy All About Berlin when I push new changes. I&rsquo;m using adnanh/webhook on an Ubuntu 24.04 VPS on DigitalOcean, behind CloudFlare. The problem The webhooks failed with the following message: &ldquo;We couldn&rsquo;t deliver this payload: failed to connect to host.&rdquo; Let&rsquo;s look at the facts: The webhook server ran properly on port 9000. I…