After trying flash smiui for my Xiaomi Note 3 Pro i have this error:
Installing sMIUI...
symlink: some symlinks failed
Updater process ended whit ERROR: 7
Error installing zip file '/external_sd/ROMS/sMIUI_v7_kenzo_6.4.21_ENDIP.zip'
Updating partition details...
..done
twrp version...