Same problem, Turris 1.1, OS 3.11.2.
It just worked when booted from internal memory, but when booting from SD card brings this error in Foris.
(Reverted from SD to internal memory to resolve a problem with RAM and using commands from this post: "Cannot allocate memory" - Only 250MB of RAM...?!)
Edit: Problem solved, my fault: due to the limited size of RAM, Foris used to fail, leaving processes in memory - so I disabled foris-controller package. After re-enabling it, Foris works fine now.