You don't have permission to access / on this server

Anyone had this issue. You don’t have permission to access / on this server. I am running this on my own server and have all the let’s encrypt cert installed. This morning I was able to access it but now i am above error message. I did ufw rules and everything looks good there. Any advice would be great.

Sounds like something thrown up by the web server configuration, rather than a firewall (as you are connecting to the machine and getting an http error code).