I was just about to migrate to NextCloud with the migration tool provided, but now I am stuck in the middle of the migration process. At first I got an error message saying that the selected version is older than the current version - which seemed odd to me as the script selected the NC version based on my current OC version automatically. I hit “Retry update” as this is the only actionable UI element anyway and suddenly I got a different error message further down:
I did some tests with the updater, and it run with zip 1.13.5. So it could be. I posted a bug on the bug tracker, the developers can perhaps give you more details (if you can add some more details of your system, this would be helpful in order to reproduce your problem):