This is the most common error. It usually happens when the of the save file does not match the Region of your game ISO.
If GoW isn't recognizing your card, community members on NGEmu suggest checking if your card folder is set to "read-only" or if you are accidentally using a different card stored in your "Documents" folder instead of the emulator's installation directory. God Of War 1 Save Game Memory Card For Pcsx2
Modern versions of PCSX2 use a folder system for memory cards, which makes adding saves incredibly easy. This is the most common error
Ensure the save file region (e.g., North America/NTSC or Europe/PAL) matches your game disc's region to avoid loading errors. Available Save Game Content God Of War 1 Save Game Memory Card For Pcsx2