Non-nullable field 'selected' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Non-nullable field 'logger' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Possible null reference return.

Possible null reference argument for parameter 'source' in 'IOrderedEnumerable<UserModel> Enumerable.OrderBy<UserModel, int>(IEnumerable<UserModel> source, Func<UserModel, int> keySelector)'.

Possible null reference argument for parameter 'path' in 'DirectoryInfo Directory.CreateDirectory(string path)'.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'path' in 'DirectoryInfo Directory.CreateDirectory(string path)'.

Possible null reference return.