I’m using .NET 6 and I’m trying to declare and bind something like this:

I have been getting the weirdest unhandled exception – (one of the green ones, not the yellow) – and its complaining about a missing file exception that it can’t find System.Drawing.Common 8.0.0.0.
The fact is this is installed and referenced appropriately and I can’t work it out. My original code did call a function with reference to a BitmapImage object, but I have since removed this to eliminate issues with the Drawing dll – however EVEN after removing this code referencing a BitmapImage – it STILL complains about this missing file, it makes zero sense, I believe its a bit of a “red-herring” error and is to do with something else that is not 100% related and it’s sending me off down a blind alley.
Can anyone think of what might be causing this error – and any ways I might go around resolving it.

I am currently trying to upgrade a logging lib from framework 4.8 to .net 6.
We have the following lines of code