Nginx Reverse Proxy and Cloudflare Tunnel Configuration Issues

I have a Host Website at 192.168.1.112:80 and I have an Nginx Reverse Proxy at 172.22.155.99:8081. I have a VM that is connected to the Nginx Reverse Proxy, and I can access 172.22.155.99:8081 from the VM. The VM has Cloudflare Tunnel installed, and I have created a Public Hostname that maps to 172.22.155.99:8081 on the Tunnel service. However, I cannot access the website through the Cloudflare Tunnel’s Public Hostname.

What error are you getting? What do the logs show?