Can't update container or reboot to force update

I am trying to update an application, several of my devices have failed to update due to application container running error, normally I would restart the device or device container and that would usually work. If all that wouldn’t work I would try the ssh into the hostOS and run the command:
shutdown -r now which would fix the problem.

But now I can’t even do that option because of the following error:

shutdown: error while loading shared libraries: /lib/systemd/ invalid ELF header

The devices are remote and I cannot access them currently due to the Corona Virus, any help would be greatly appreciated.