Wuthering Waves players have been encountering a wide range of crashes and startup issues since launch, and the Line 258 error is frustratingly common.When starting up Wuthering Waves for the first time, affected players will see a pop-up notification that reads “The UE4 Client Game has crashed and will close.” Additional text explaining the problem in more detail looks like gibberish at first, but there’s one key phrase that gives players an idea of what’s wrong. “Fatal error: [File:Unknown] [Line:258]” is the full name of this startup crash, but most Wuthering Waves players just call it the Line 258 error for short.How to Fix Line 258 Error in Wuthering WavesFixing the Line 258 fatal error in Wuthering Waves is complicated, but the solution is a guaranteed fix if you do it correctly. Here’s an overview of what you need to do.Download SQLite Database Editor.Open the Database Editor and find your Wuthering Waves install dir…