Unable to Load Endless after update

#1

I updated endless from 3…3.1 .0 to 3.3.16 after that neither previoius version nor updated version loads
, nothing is shown if arrow key is pressed errors flashes for example login services failed to start and disk manager fails to start

#2
  1. Open the application called ‘Terminal’
  2. In this application run the command:
rm -f eos-fix-ostree-repo
wget https://raw.githubusercontent.com/endlessm/eos-meta/master/eos-tech-support/eos-fix-ostree-repo
chmod +x eos-fix-ostree-repo
sudo ./eos-fix-ostree-repo && flatpak update
#3

Sir,
Endless is not booting up
I have to reinstall 3.3.1 and if i update is will crash again and never boot up

#4