You need to edit the script in the zip file to include sweet_k6a instead of sweet.
Then it will work for u.
After u edit the script, make sure to update the zip file with updated script.
And then copy new zip to phone and flash.
All this, is assuming u have actually downloaded the correct ROM.
If not, the above will brick your phone...
Sent from my Xiaomi 12 using Tapatalk