Error on macOS Installer (installing Sierra)

Hello,

I'm receiving an error when trying to install Sierra. The error message is simply:

"An error occurred installing macOS. To use Apple Diagnostics to check your Mac hardware, shut down, press the power button, and immediately hold the 'D' key until diagnostics begins.

Quit the installer to restart your computer and try again."

The log output is attached.

Thanks for any help you can provide.