I am trying to initialize a list in a class but it thows object not set to an instance of an object
Objs
    class te1
    {
       public t2 test2 {get; set;}
       public string tst {get; set;}
    }
    class t2
    {
       public List<string> da {get; set;}
    }
Calling (this is what throws the error)
  var data = new te1();
  data.t2.da = new List<string>();
