Can't migrate vault after updating to CM 1.5.17: 'An unexpected error occured' ... Java 'nosuchfileexception'

Oh well, that’s a totally different (but known) issue, see: https://community.cryptomator.org/t/1-5-15-1-5-16-cannot-mount-vault-mount-timed-out/7981

Sorry for all the headache but this one is going to be fixed very soon.