I spent a whole day trying to solve this, including restarting the project from scratch several times.
At the time of writing this the Stylized Character Kit will probably break you project. I’m not sure exactly where the problem lies though.
I also get a ton of problems with 5.3. But I am really not sure that the Stylized Character Kit is at fault.
Personally, I add to get visual studio 2022 up to the latest version, and quite a few packages. Development .NET Desktop, Development Windows universal, Destop C++, Develoment games with C++, Kit SDK .NET, SDK .NET Framework 4.7, .NET 6.0, etc