System.Diagnostics ActivitySource issue

Hi, I’m trying to play with Proto.Actor

But it crashes with missed method exception.

GitHub - antokhio/VL.IO.Proto.Actor: An implementation of Proto.Actor for vvvv/vl. · GitHub repo if anyone kin to check that…

Upon digging this issue goes down to:

using System.Diagnostics;

// ..
            var ass = new ActivitySource("Test");
// ..

Like if we use system diagnostics not from .net8.0?
I did a test project with just above, and it’s not crashing here hmm.