Hi @Tigere, I spent a bit of time facing this issue too but eventually got it to work. I was running TTS v3.9.4 in docker in a VM running Ubuntu 20.04, using self signed certificates in a made up domain name (ttn.local.com) that had not entries in any DNS.
To get mine to work I had to ensure the mapping of domain name to TTS stack docker network gateway ip address was put into both the VM machine /etc/hosts file AND in the TTS docker container /etc/hosts file (ie. 172.25.0.1 ttn.local.com).
Note to add the mapping to the tts stack docker container /etc/hosts file I found it easiest to add the extra-hosts property to the docker-compose.yml file so it adds the mapping to the docker /etc/hosts file automatically upon starting the container. Here’s a snippet of my docker-compose.yml file:
services:
…
stack:
…
extra_hosts:
- “ttn.local.com:172.25.0.1” # Ensure this IP address matches the docker network gateway address.
…