WARP to private network(cloudflared tunnel) not work

I followed this doc to setup WARP to access cloudflared tunnel on Zero trust.

but when I try to access the website from
http. :// :8081
this not showing a web server running on Cloudflare tunnel machine at port 8081

any idea? thanks

is it riunning on the same machine that’s running the tunnel? i don’t rlly know but maybe try or localhost