Lock screen image stuck to the windows default

Lock screen image is stuck to the windows default

Whenever I try to change my lock screen, it instantly reverts back to the windows default image. I had a picture that suddenly disappeared. The slideshow setting doesn't help. How do I fix?

Desktop (please complete the following information):

• Windows 11 Pro, 25H2
• .NET Frameworks installed: Microsoft ASP.NET Core 8.0.11 - Shared Framework (x64)
• Optimizer version 16.7

Optimizer.log