The warning is about a footprint library, but your last screenshot is showing a symbol library. Symbols and footprints are in separate libraries.
It also looks like you have very many libraries, and then each with one symbol or footprint in it. Is this intended, or did this just grow organically?
I see in your profile that you are on this forum since 2021, and I assume you’ve done quite a bit of KiCad projects in that time. It looks like it’s time for you to dive a bit deeper into KiCad, read the manual and learn how the libraries work.