Can I ask about your setup on 'Forget Me Not'? I've tried the apt-get install version of volatility, as well as git cloning both the latest version and a dev version (after reading the forum hint about needing to modify the tool). I've tried running off Ubuntu 18.04, Kali 2020.1, and Win10. After building the custom overlay, I'm able to extract what appears to be most of the filesystem with linux_recover_filesystem, but it seems like many (not all) of the interesting files are zero-filled when I use xxd. I've started down the rabbit hole of trying to debug the Volatility's Python scripts but that seems a little beyond what the challenge is looking for. Am I missing something?