What does a 'UE4 Fatal Error' typically indicate in Wuthering Waves?

A 'UE4 Fatal Error' in Wuthering Waves, or any Unreal Engine 4 game, generally signifies a critical and unrecoverable issue that caused the game to crash. This could stem from various problems, including corrupted game files, driver incompatibilities, hardware limitations, or even specific bugs within the game's code.