I have the same problem.
The update also broke maintenance options.
I can't do startup repair.
I can't do a reset (soft nor hard) cause it fails mid process and only uninstalls my apps, then fails and hangs till I restart it.
I can't revert to an old update because I don't have the option within the OS > settings > update and security
Trying to revert to an older update from the troubleshooting startup says there was a problem.
Trying the above steps from a recovery USB gives all the same issues / errors.
Trying to create a windows installation media usb fails, I've tried 2 USBs on 2 computers but it fails to create the installation media, I can't use an older tool because it will say it's not the latest.
I'm literally stuck with this POS update unless this update gets fixed.