Radzen Blazor for Visual Studio Failed to open project

Hello, I have installed the Radzen Blazor for Visual Studio extension. When I try to open a .razor page of my Blazor Server project (already existing) I get this error :

Has anyone already encountered this error ?
Thanks for your help.

Hi @matt03,

For some reason our extension cannot open the solution. This particular code is trying to determine the target framework but fails for some reason. Could you share the solution with us somehow? For example you can upload it to some cloud storage service and send us a download link to info@radzen.com.

I can't share the code... but the blazor app is contained in an enterprise ERP solution containing .net 9 projects and historical .net framework 4.8 projects. Could this be the source of the problem?

That's probably the cause of the problem. You can try creating a new solution which contains only the .NET 9 projects.