it's not an issue, that's just your code that is wrong (3500 completions in python!)

issue still there for pyton

I do.

I think, there is a method defined in the test class. Otherwise, var myInstance = CreateInstance(myType);
will not compile at all. Something like that:

public static dynamic CreateInstance(Type myType)
{
return Activator.CreateInstance(myType);
}

Which language was that in?

i think upercase of "o" will be excluded in check!

No, Name is not important. Type is important.
When the Human object is created:

Human person = new Police();
person.Name = "John";

You have to return John as Police.

Human person = new Spy();
person.Name = "Sara";

You have to return Sara as Spy.

The mistake was that the current result and expected result were in the wrong position in the assertion test.
It is now fixed, but your code still can pass it.
You still need to improve it.

LOL. Didn't know C# error messages were this bad. Your code is returning a list of Student objects. The function is supposed to return the name of students, i.e. a list of strings.
The error message seems absurd because it doesn't mention the type of List.

Please post your solution here, then I can help you.