What does this error mean?

Error loading cfg/trusted_keys_base.txt
Error loading cfg/pure_server_minimal.txt

I have searched facepunch for the answer before I posted here. These 2 errors are posted in many threads, but I can’t find where anyone mentions what they mean. They occur for me every server restart and map change on 5 different gamemodes. Does anyone know what might be causing them?

it means you’re missing them but honestly they aren’t required anyway

Thanks!