SFML keyboard not working

#include <SFML/Graphics.hpp>
#include <iostream>


class Game
{
    public:
        Game();
        void run();

    private:
        void proccessEvent();
        void update(sf::Time deltaTime);
        void render();
        void handlePlayerInput(sf::Keyboard::Key key, bool isPressed);

    private:
        const float playerSpeed = 0.1f;
        const sf::Time TimePerFrame = sf::seconds(1.0f/60.0f);

        sf::RenderWindow mWindow;
        sf::Keyboard::Key key;
        sf::Texture texture;
        sf::RectangleShape rect;
        bool isPressed;
        bool mIsMovingUp;
        bool mIsMovingDown;
        bool mIsMovingRight;
        bool mIsMovingLeft;



};

Game::Game()
: mWindow(sf::VideoMode(640, 480), "SFML Application"), rect()
{
//  rect.setTexture(texture);
    rect.setFillColor(sf::Color::Red);
    rect.setSize(sf::Vector2f(20.0f,20.0f));


}

void Game::run()
{
    sf::Clock clock;
    sf::Time timeSinceLastUpdate = sf::Time::Zero;

    while(mWindow.isOpen())
    {
        proccessEvent();
        sf::Time elapsedTime = clock.restart();
        timeSinceLastUpdate += elapsedTime;
        while(timeSinceLastUpdate > TimePerFrame)
        {
            timeSinceLastUpdate -= TimePerFrame;
            proccessEvent();
            update(TimePerFrame);
        }
        render();
    }
}

void Game::proccessEvent()
{
    sf::Event event;
    while (mWindow.pollEvent(event)) {
        switch (event.type) {
            case sf::Event::Closed:
                mWindow.close();
                break;

            case sf::Event::KeyPressed:
                handlePlayerInput(event.key.code, true);
                break;

            case sf::Event::KeyReleased:
                handlePlayerInput(event.key.code, true);
                break;

            default:
                break;
        }
    }
}


void Game::update(sf::Time deltaTime)
{

    sf::Vector2<float> movement(0.0f,0.0f);
    if(mIsMovingUp)
    {
        movement.y -= playerSpeed;
    }
    else if(mIsMovingDown)
    {
        movement.y += playerSpeed;
    }
    else if(mIsMovingRight)
    {
        movement.x -= playerSpeed;
    }
    else if(mIsMovingLeft)
    {
        movement.x += playerSpeed;
    }
    rect.move(movement * deltaTime.asSeconds());

}



void Game::render()
{
    if(!texture.loadFromFile("/Users/tahajalili/Desktop/Eagle.png"))
    {
        std::cout << "Error occured" << std::endl;
    }

    mWindow.clear();
    mWindow.draw(rect);
    mWindow.display();
}

void Game::handlePlayerInput(sf::Keyboard::Key key, bool isPressed)
{
    if(key == sf::Keyboard::W)
    {
        mIsMovingUp = isPressed;
    }
    else if (key == sf::Keyboard::S)
    {
        mIsMovingDown = isPressed;
    }
    else if (key == sf::Keyboard::D)
    {
        mIsMovingRight = isPressed;
    }
    else if (key == sf::Keyboard::A)
    {
        mIsMovingLeft = isPressed;
    }
}

int main(int, char const**)
{
    Game game;
    game.run();

}