Apache Reverse Proxy

SYSTEM INFORMATION
OS type and version Ubuntu 20.04
Webmin version Latest

I have a vps with webmin/Virtualmin installed. I have a domain but it has no website.
I have a server installed on the vps that I reach on another port

I have setup an Apache Reverse Proxy on the http and it works flawless but I cant get it to work on https. Anyone that have a good guide how to change the conf file to also work for https

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