Argo - SSL

I have a question … Do i need certificate on origin when using Argo ?
I have problem running Argo … I guessed that it could be because of ssl certificate on origin

Is it Argo Tunnel or just Argo?

For Argo operates as your normal Cloudflare procedure.

For Argo Tunnel you do not need an SSL on your origin as you point to HTTP and no one can access externally that port.

Example config below.

logfile: /var/log/argo-log.txt
loglevel: debug
origincert: /etc/Cloudflared/cert.pem