What error in this program needs to be fixed? def sum(num1, num2): return num1 + num2 5.5, 6)) print(sum(4, What kind of error does this program contain? age = int(input("Enter your age: ")) print("You are" + age + "years old.") What error in this program needs to be fixed? def sum(num1, num2): return num1 + num2 5.5, 6)) print(sum(4, What kind of error does this program contain? age = int(input("Enter your age: ")) print("You are" + age + "years old.")