C++ chyba

#include <iostream>
#include <vector>
#include <functional>
#include <algorithm>
#include <numeric>
#include "Keys.h"

using namespace std;

typedef function<void(KeyboardShortcut)> KeyboardCallback;
struct KeyboardShortcut
{
private:
    vector<int> _included_keys;
    vector<int> _excluded_keys;
public:
    KeyboardShortcut(
        const vector<int> included_keys,
        const vector<int> excluded_keys = {}
    )
    {
        _included_keys = included_keys;
        _excluded_keys = excluded_keys;
    }
    vector<int> included_keys() const { return _included_keys; };
    vector<int> excluded_keys() const { return _excluded_keys; };
};

class CustomSlot
{
private:
    unsigned int _index;
    KeyboardShortcut _copy_shortcut;
    KeyboardShortcut _paste_shortcut;
public:
    CustomSlot(
        const unsigned int index,
        const KeyboardShortcut copy_shortcut,
        const KeyboardShortcut paste_shortcut
    )
    {
        _index = index;
        _copy_shortcut = copy_shortcut;
        _paste_shortcut = paste_shortcut;
    }
    unsigned int index() const { return _index; }
    KeyboardShortcut copy_shortcut() const { return _copy_shortcut; }
    KeyboardShortcut paste_shortcut() const { return _paste_shortcut; }
};