need help

When I try to use the cloudflare tunnel I have set up, it shows this:

Good morning, all! This is my first post here, and I'm only making it because I truly couldnt figure this one out on my own. The other day I shut down my 3 nodes in my homelab server rack to unplug it and get all the dust behind and around it. Upon rebooting, my main node seems to have failed...