The job was canceled because "ubuntu-latest_linux-mus_2" failed.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Nullability of reference types in type of 'event PropertyChangedEventHandler RunConfig.PropertyChanged' doesn't match implicitly implemented member 'event PropertyChangedEventHandler? INotifyPropertyChanged.PropertyChanged'.

Cannot convert null literal to non-nullable reference type.

The type name 'pack' only contains lower-cased ascii characters. Such names may become reserved for the language.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.