The emulator cannot find the key files in the directory.
Nintendo updates its system encryption with major firmware releases. Firmware version 18.0.0 introduced updated encryption algorithms. To play games compiled for firmware 18.0.0 (or newer titles requiring this baseline system version), your Ryujinx installation must utilize matching . How to Get Ryujinx Prod Keys v18.0.0 Legally ryujinx prod keys v1800 latest product keys
: These are decryption keys used by the emulator to read game data. The emulator cannot find the key files in the directory