Sorry for this delayed reply.

What does the ControlBlock installation do, if you you run the ControlBlock installation directly from the command line via

wget -O - https://raw.githubusercontent.com/petrockblog/ControlBlockService2/master/install.sh | sudo bash

(see https://github.com/petrockblog/ControlBlockService2#quick-installation)

Do you observe the same behavior?
Can you post the link to the OS image that you are using, so that I can try to replicate the error?