I'm importing the Visual Studio Solution file from Develop > Source Code > Solutions > Import a Visual Studio Solution.
There is no error displayed and no diagram created.
When I import from Develop > Source Code > Files > Import Source Directory, the diagram is created.
How can I import a Solution file to EA? I've included the screenshot which includes the differences of these two import methods.
Sparx Enterprise Architect: version 16.1.1628 - 64 bit - Unified Edition
Visual Studio Solution: TargetFramework .net 6.0

For me it looks like EA doesn't support "new" (few years old) csproj format. Loading source works fine, solution can't be loaded but projects itself are discovered correctly.