I had one fail fairly early, giving me a cryptic message because apparently it couldn’t cope with how I’d set up the partitioning.

I’ve had a Linux Mint install fail because it couldn’t cope with a BIOS setting, the error message gave a plain English explanation “it’s probably the XMBT (or whatever acronym) setting in the BIOS, see this page on the Ubuntu wiki for details:” and it gave a hyperlink, because the installer runs in a live environment, it had a copy of Firefox ready to go, AND it gave a QR code so you could easily open that link on a mobile device. THAT’S how it’s done.