'Stack<INamedTypeSymbol>' does not contain a definition for 'TryPop' and no accessible extension method 'TryPop' accepting a first argument of type 'Stack<INamedTypeSymbol>' could be found (are you missing a using directive or an assembly reference?)

'Stack<INamedTypeSymbol>' does not contain a definition for 'TryPop' and no accessible extension method 'TryPop' accepting a first argument of type 'Stack<INamedTypeSymbol>' could be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

Dereference of a possibly null reference.