I've also have such logs when try to flash 7.10.19:
unmount of /system failed;no such volume
script suceeded: resut was []
updating partition details...
...done
After it system cannot load with blinking Mi logo. Currently TWRP 3.1.1 and 7.8.17 xiaomi.eu installed
What should I do to fix it? Should I first install 7.2.9 as I already can boot on 7.8.17?
Finally loaded to 7.10.26.
Following steps are performed:
1. As I still not have unlocked bootloader I do rollback to 7.1.6 (bootloader is not locked on this version) via MiFlash.
2. Then install TWRP 3.1.1 for libra/aqua.
3. Install 7.10.26 via twrp
4. Re-flash Twrp without rebooting to have twrp fully functional with locked bootloader (it is locked after flash 7.10.26)
5. Reboot to twrp and cleen Dalvik and Cache
6. reboot to system
This work for me. Probably it will be much easier when I unlock bootloader officially, but still need to wait for it.