Failed upgrade. Next steps?

[littlekun]

Another user had the similar experience and they have shared a solution you may try it too:

"Oh No! Something has gone wrong" white screen of death after upgrade to Zorin 18

On my old MacBook Pro I upgraded from version 17 to 18, using the upgrade app. Upgrading finished without any issues. Rebooting went well as well, I unlocked the disk, but before arriving at the login, I ran into the "Oh No! Something has gone wrong" screen. I managed to solve it and want to share the steps, in case somebody has the same problem. What I did is press Esc during boot and select in Grub the failsafe boot, then in the menu (I think via "advanced options") I enabled networking and …