How to Fix the "No Default Constructor" Error in C++

"Deviated" in this context means that the expected behavior of the code has changed, and it is no longer following the expected pattern. In other words, the code has deviated from its intended path.

The issue you're facing is caused by the fact that `std::vector` does not have a default constructor, so when you try to create an instance of `MyVector` without providing any arguments, the compiler will not be able to construct the object.

To fix this issue, you can add a default constructor to your `MyVector` class that initializes the vector with an empty list:
```
class MyVector {
std::vector myVector;
public:
MyVector() : myVector{} {} // default constructor
// ... other methods ...
};
```
This will allow you to create instances of `MyVector` without any arguments, and the object will be constructed correctly.

Alternatively, you can also add a constructor that takes no arguments and initializes the vector with an empty list:
```
class MyVector {
std::vector myVector;
public:
MyVector(const std::vector&) {} // default constructor
MyVector() : myVector({}) {} // default constructor
// ... other methods ...
};
```
This will also allow you to create instances of `MyVector` without any arguments, and the object will be constructed correctly.