cannot instantiate abstract class & no overloaded function could convert all argument types (c2259 & c2665) - visual-c++

Question

I'm working in visual studio and I keep getting these error.
E0322 object of abstract class type "GameState" is not allowed
Error C2259 'GameState': cannot instantiate abstract class
Error C2665 'GameState::GameState': no overloaded function could convert all the argument types
I understand that I need to override the functions from the state class in the gamestate class and I thought that I did that but apparently not. Can anyone see where I am going wrong?
code:
state.h:
class State {
private:
sf::RenderWindow* window;
std::vector<sf::Texture> textures;
public:
State(sf::RenderWindow* window);
virtual ~State(); //this means that all child classes must define these
virtual void endState() = 0;
virtual void update(const float& dt) = 0;
virtual void render(sf::RenderTarget* target = nullptr) = 0; };
state.cpp
#include "State.h"
State::State(sf::RenderWindow* window)
{
this->State::~State(){}
gamestate.h
#include "State.h"
class GameState :
public State
{
private:
public:
GameState(sf::RenderWindow\* window);
virtual \~GameState();
void endState();
void update(const float& dt);
void render(sf::RenderTarget\* target);
};
Gamestate.cpp
#include "GameState.h"
GameState::GameState(sf::RenderWindow\* window)
: State(window){}
GameState::\~GameState(){}
void GameState::endState(){}
void GameState::update(const float& dt){}
void GameState::render(sf::RenderTarget* target = nullptr){}
game.h
#include "GameState.h"
class Game
{
//variables
sf::RenderWindow* window;
sf::Event sfEvent;
sf::Clock dtClock; //frame tracker
float dt; //deltatime
std::stack<State*> states;
//initialization
void initWindow();
void initStates();
public:
Game();
virtual \~Game();
void updateDeltaTime();
void updateSFMLEvents();
void update();
void render();
void run();
};
game.cpp
//I will be leaving out all the unnecessary code to save space
#include "Game.h"
void Game::initStates() {
this->states.push(new GameState(this->window)); //this is where the problem is
}
hovering over GameState says that State::endState()/render()/update() has no override
please help!!!