Reverse proxy with apache2 stuck at creating a secure connection

[ManuXD32]

Hey, I've configured kasm in an ubuntu server machine, let's say It's IP in the LAN is 192.168.0.123 and the port is 9999. I've got an apache server in a diferent ubuntu server machine, so I've configured the reverse proxy in the second machine following the kasm guide, I've also followrd the troubleshooting guide for the reverse proxy not working, I changed the default zone configuration.

After all of that I still can't make It work from outside my LAN using the domain I've given it in the apache server (let's say it's kasmplace.org). When I try accesing it through the domain it gets stuck at "creating a secure connection..." but if I open the port to the WAN and try accessing it using the external IP, I can use the containers just fine.

Any idea?

Thanks in advance.

I'm using the last version of kasm

[ManuXD32]

Fixed with these changes https://github.com/kasmtech/workspaces-issues/issues/412