[pinephone-pro] Installer is broken

Hi, I am unable to use the Mobian installer on PPP. After booting, it says it's unable to load some modules - see screenshot. I tried both with plamo and phosh images; I mainly tried sdcard, but once I even tried to get the installer image onto the emmc directly - the result is always the same.

I used mobian-installer-rockchip-*-20250119.img.xz and had a similar issue in previous weekly image as well.

I was unable to figure out how to debug this further, I'd appreciate a hint here, as I do not know the default root credentials for the image.