Nullability of reference types in type of parameter 'other' of 'bool WorkingDirectoryFile.Equals(WorkingDirectoryFile other)' doesn't match implicitly implemented member 'bool IEquatable<WorkingDirectoryFile>.Equals(WorkingDirectoryFile? other)' (possibly because of nullability attributes).

Nullability of type of parameter 'callback' doesn't match overridden member (possibly because of nullability attributes).

Nullability of type of parameter 'state' doesn't match overridden member (possibly because of nullability attributes).

Nullability of type of parameter 'callback' doesn't match overridden member (possibly because of nullability attributes).

Nullability of type of parameter 'state' doesn't match overridden member (possibly because of nullability attributes).

Converting null literal or possible null value to non-nullable type.

Dereference of a possibly null reference.

Converting null literal or possible null value to non-nullable type.

Dereference of a possibly null reference.