Greetings @Lapan_Terose
Welcome to the Unreal Engine Community Forum. With this, I’d start by deleting any ‘Intermediate’ or ‘Saved’ folders inside your project folder and try re-running it. If that fails, I’d recommend checking out this threat Unknown Package Error UE5.2. A user there had a very similar issue was provides some steps they used to fix it. I hope that helps!