Error - Arena MQTT periphery is down

[NitzanAlbeck]

I got this error saying the MQTT of the periphery is down.
I couldn't turn the arena daylights on or off as well

[NitzanAlbeck]

Restarting the arena periphery did the trick.
The best way to do so is from the terminal:

# get into prey touch directory
cd docker
docker-compose restart periphery

After that, I restarted the whole application in the terminal:
sudo supervisorctl restart prey_touch