if you are not using the latest master image then
if you want shellinabox on older hardware its just

// ShellInABox
sudo apt install openssl shellinabox
sudo nano /etc/default/shellinabox

Change SHELLINABOX_ARGS="--no-beep --disable-ssl"

sudo systemctl restart shellinabox

Note that the myServer controller OS user name is "allonis" and password is also "allonis".