Mii's face not showing

I was playing Tomodachi Life when i got to the point to make my look-alike. My mii looked like this

In order for us to provide better support, we need to see the log generated by yuzu. This guide will walk you through how you can obtain the log file: https://yuzu-emu.org/help/reference/log-files/

@Antonela_Cappello The Mii faces aren’t included for legal reasons. You’ll need to rip the system files from a real 3DS for the Miis to work.

Above is a answer but mine could be a reason as well.
But you would need AES keys from your 3DS to download system files either old 3DS or new 3DS or minimal, then after system menu and other system apps are installed while installed old 3DS or new 3DS system files, you would need to make your own mii in the mii maker app either using your camera or do it yourself
I hope that helps!