confused, do you install this on haos? or otherwise i think i have CORS problem

[mysteriousHerb]

I am using HAOS in a proxmox VM, and i run the docker compose in another VM.
I can see the contacts but when i send message i just get unknown error.

[ChrAnd2]

Hey,

Did you already try to use Postman to call the API endpoints manually?
It might give you more information about what's going on.