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

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

Argument of type 'List<ToDoTask?>' cannot be used for parameter 'arg' of type 'IList<ToDoTask>' in 'Task Func<IList<ToDoTask>, Task>.Invoke(IList<ToDoTask> arg)' due to differences in the nullability of reference types.

Dereference of a possibly null reference.

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

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

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Argument of type 'IList<ToDoTask>' cannot be used for parameter 'tasks' of type 'IList<ToDoTask?>' in 'void MainForm.UpdateTaskListView(IList<ToDoTask?> tasks)' due to differences in the nullability of reference types.

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