Retroarch unable to see PSX BIOS files

I was able to play some PSX games just fine under RetroArch, and then I started having some issues with the game, so I closed it, and reopened the game, and then the game wouldn’t load, and then started giving me messages that it can’t find Playstation BIOS file ??? the PSX BIOS file is in the system directory, it’s there, it’s read-write accessible, so I don’t get why RetroArch just suddenly pretends it can’t see or read them anymore.

What is even going on? Why’s Retroarch broken suddenly for no reason when everything was working perfectly fine before?

If you post a log, I can take a look.

Also, double-check that your ‘system’ directory location is pointing where you expect it in settings > directory.