Native PC for UEFI ver6.0 Error [SOLVED]

I apologize greatly.

But when you say extract to the Dietpi installer do you mean extract the file into the DietPi_v6.0_NativePC-EFI-x86_64-Stretch_mmc.iso file, before I try to flash it to a USB? Or do I extract this into the iso ‘after’ I use the installer.

For example:
Rufus flash to USB, extract file into ‘flashed’ USB, then reboot.

I don’t understand.